Great mouse, love the customization
931332
I really like this mouse. I bought it a while ago after I decided I needed a better gaming mouse, and my friend already had this one. I like how it is customizable because every other mouse I've tried is either too steep of an arch or too flat, and with this one, I can change it to be however I want. It is also very easy to use because of the adjustable length. The Synapse driver software is very easy to use and almost everything about the mouse is customizable. Overall, I think it was a great buy and will definitely be buying from Razer again
3777199
Overall I am quite happy with this mouse, though there are some things to be aware of prior to purchasing.  The positioning of the side buttons may or may not work for your hand size/grip style.  If at all possible, try to test one out in person before ordering.  This is not a small mouse by any stretch of the imagination.  For me personally, this is excellent, since I prefer a larger/heavier mouse, but if you prefer a more standard sized, or smaller mouse, this may not be the best option for you.

The software is easy to use, and seems to be fairly powerful for configuring your mouse.  I did have a problem with it not loading, and popping up an error message in Chinese that I was unable to read.  I had to resort to google image translation in order to decipher it.  This is a shortcoming to be certain.  Error dialogs definitely should respect the language of the machine it is installed on.

The color configuration is pretty unimpressive, particularly after being exposed to Razer's Chroma system.  Using the same RGB values, my three light areas do not truly match in color, and I have been unable to get a truly good match for my Orbweaver that has the perfect color I wanted.  The side and logo is pretty close, but the mouse wheel is significantly lighter in color (you can see this a little in the attached photo, how the mouse wheel is much brighter than the logo or side buttons, and results in a more washed out color).  It is also not exactly accurate to say this has a huge color range.  While you can program in 16.5 million different colors, you will not get that many.  I don't know if it's a result of the LEDs being used, or the controller for the LEDs, but I would say it's much closer to a few thousand colors if I had to toss out a completely arbitrary number based on anecdotal experience.  All in all, however, it is nice being able to find a color to match my computer's theme.

Finally, I have noticed that the right mouse button squeaks fairly regularly with the pre-installed switch.  I have not tried changing them out to see if this is the switch itself, or the button mechanism.  I have seen other reports of this as well, so it seems to be a manufacturing or design issue with the mouse.  Personally I find it fairly annoying when I am playing with the volume down, but mainly because my computer is VERY quiet.  I suspect if you have a machine that makes a more "normal" amount of noise, you may not even notice it.

(The other mice in the image are the Mad Catz M.M.O.7, which is no longer being made, an excellent mouse despite the mouse wheel being garbage, and the Tt e-Sports Ventus Z, an excellent mouse for the money.)
3092224
This is a great mouse. It is so cool looking, and has many customization options. It is as in picture, came with a unique package design.
3494500
This may be the most comfortable fitting mouse I have ever used. The surface has a slight texture to it (nothing much, but just enough that it isn't slick). It is super responsive and that can even be changed with the Razer software. In fact you can change a few other settings too which is really nice. My only gripe are the buttons on the side. I didn't take off any stars as I think this is just a preference issue. The two buttons for your thumb, for me are a little awkward. They are somewhat flush with each other with hardly any gap between them which makes me pause for a split second to make sure I am pressing the right one. Maybe once I have used it a little longer I won't have this issue as I have only put about 10 hours use into it. Overall though - I think it is great.
3803606
This is a great mouse... recomended to me from a fellow gamer while browsing at microcenter.

I needed a new mouse for gaming and after many reviews it came down to the RAT7 or the Logitech GX9.

I have large hands so I wanted a mouse with a wide stance.  The great thing about the RAT7 is that the thumb pad is adjustable... so I knew i could make it fit my hand... the only thing i found disappointing and the reason i gave it 4 stars only for built quality was that after only 2 weeks of gaming, the thumb rail which is adjustable can no longer be adjusted.  the tension that holds it in place is no longer strong enough to hold in place while im gaming.  Lots of people hold a mouse in a lot of ways... i'm a pincher.. I squeeze the mouse between my thumb and pinky and that is how i grip it to move it around rather than resting my palm on the mouse.  The tight grip over days and days of use eventually broke down the resistance that held the thumb rail in place...

Luckily i find the default closed position is quite comfortable anyway so I didn't feel the need to replace it or return it.

Everything else about the mouse is fantastic. from the customizable weight system, and the 4 point customizable DPI adjustment with a toggle button just below the scroll wheel, to the interchangeable parts for the pinky rest and the palm rest.

My favorite feature though which is what sold me over the G9X is the precision aim button.  The little red button near your thumb can toggle lower DPI on the fly.  The way it works is whatever preset you have for your 4 DPI modes, you can set that button to cut that by a % (from 99% to 1%)  so if you have a comfortable DPI setting in an FPS game of 2000DPI and you set the button to 20%, when you press it, your DPI goes from 2000 to 400 and when you let go, back to 2000.  This is a must have for FPS, once you experience it, you'll never go back to any other mouse.

this mouse gets an overall rating of 5 stars in my book and i'm a very picky hardware guy.  I would buy this mouse again for sure.
1236099
Modified review: This is a nice mouse once I found some (3rd party) software to allow more customization to the buttons. My original issue was that the side buttons are advertised as "programmable", which is a stretch. X-Mouse Control makes them truly programmable, and now I'm very happy with this mouse.
4159409
Love the ability to customize through the weights and the rgb. The only thing that could make this mouse better if it was wider and had a rest for the pinky and ring finger.
2534317
Bought this to replace my failing Logitech G700.
In a world where eveyone wants wireless things and Laser-sensor mice, this OPTICAL, WIRED mouse was a nice change.
The cord is a very nice, long cable with a nice braided outer jacket and looks to be fairly durable.
The texture of the mouse is a very nice feeling surface though your fingers seem to wear the surface visually somewhat quickly (at least compared to my G700)
The side buttons are in a nice spot and all buttons are satisfying to use.

I'm not a huge fan of RGB lighting and have all the lights turned off via the easy to use software.

Surface tracking on my soft mouse pad is superb.
I've turned off acceleration and the mouse feels great to use in any situation, games or otherwise.
Easily the nicest tracking feel of any mouse I've used recently
A definite HUGE step up from laser-based sensors, though be careful as optical mice are picky about surfaces compared to laser mice.

My only wish is that Mionix will release configuration software for Mac OS as I use this on both windows and Mac systems.
Luckily, configuration changes are rare, and persist after making changes using the windows-based software.

This mouse is a great piece of hardware and my liking of it is only rivaled by the Logitech Mouseman dual optical from back in the day.
1356994
i love the ergonomics, the adjustable thumb button position, full RGB and button customization. the CUE software takes a while to learn but once you master it, its fun to create custom lighting and macros for your game.my only gripe though is that this mouse doesn't allow me to claw grip, but i can adapt.
2580620
This mouse is awesome.  You can get it to fit your hand perfectly.  Build quality is stellar!  The styling is awesome too... most people think it's some kind of Transformer on my desk just because it looks like it could turn into something else.

My only complaint is that the receiver/transmitter for it is part of the charging dock.  I wish that it had a smaller dongle that could be used for the computer to make it nicer to take a long with your laptop.  As it is right now, it really only makes sense to use this with a desktop.

The battery life is kind of a bummer as well.  The battery only lasts about 6-8 hours of moderate to heavy use.  I use it at work and have to swap the battery every day.  This isn't the worst thing in the world since it comes with two batteries, but it does get a little annoying.

The sensitivity and built in programming functions are very nice, and seem to work quite well.  The eye on the mouse seems to freak out every once in a while which is why I took a star off of the rating.  Also, every few weeks I have to unplug the docking unit and plug it back in again because it seems to lose signal to the mouse or shuts down.  So that's the only way you can really "reboot it" as turning the mouse on and off doesn't solve the problem.

Other than those minor annoyances, which can easily be overlooked, this is a great mouse and I'd recommend it.  It looks awesome too!
4960481
This mouse is miles ahead of the previous gaming mouse that I previously bought.  The craftsmanship is great and the customization of the lighting and programming is simplified.  Might start looking into more products from Razer depending on how long this mouse lasts.
3788130
I wanted a mouse to have as a backup (I prefer wireless mice), but now all I use is this!

The mouse is really comfortable and includes an adjustable weight pack in the bottom, which is something that I've only seen in high-end mainstream mice. It's really nice to have the option to tune the weight like that.
The cable, which is the main reason why I prefer wireless mice, is not nearly as annoying as other wired gaming mice that I have owned. It is flexible enough to give instead of blocking the motion but not so much that it just gets everywhere.
Installing the software was easy, it came with a disk but I downloaded the drivers off their website. The software lets you change just about everything that the mouse can do much more comprehensively than other mouse software I have seen. Everything from the sensitivity to the color patterns to the Windows mouse settings can all be controlled from the software, which was a bonus that I didn't expect to see.

My only complaint about the mouse is that the middle mouse scroll wheel button is really soft, sometimes I'm not sure if I pressed it right or not because there isn't a click and you can't feel anything. All in all, it isn't a big issue at all, just personal preference.
I never thought I would go back to wired mice, but SHARKK has changed that. I'll definitely be paying attention to their products in the future.
2628495
I love this mouse. I've never had an ergo mouse before, but I just got the Microsoft Sculpt keyboard at work and I love that so I decided to get an ergo mouse too. I'm happy I did. There was a bit of getting used to controlling the mouse by holding my hand in a different way, but after a day or so I was back to full speed. I may buy another one to use at home.

The mouse is made with a hard plastic material, but with a soft feel. It's really quite nice. The mouse is light weight, I know some people like a weighted mouse feel, so that might be a problem for some, but not me. I love the 'forward/backward' buttons, this should be a standard feature on every mouse. The DPI button is an interesting design choice. I would think a hidden switch would be better than a button you can hit to switch between the dpi options on the fly, but I guess some people like this. At least it's out of the way and not easy to hit accidentally.

So, what would I change/fix? Well the slot on the bottom where the dongle goes doesn't make it very easy to extract the dongle, so a redesign there would be nice, or even better ... make the mouse bluetooth so I didn't need a dongle.
4404932
Really love it, it reacts to every small hand movement I make, is customizable and great for gaming. You definitely see the difference from regular and gaming mouses.
1121813
I love this mouse. I love that the back and forward buttons are on the left and right sides of the mouse. All the others have them all in a non-symmetrical way, and I vastly prefer this. I'd like to have another button or few, but 6 special buttons? That's pretty good.

If you have the g300 and want to upgrade, don't bother: it's exactly the same mouse with a new color scheme and name within its software. I only bought this one because my g300 broke.

Also, I use it with OSX and I'm not a gamer -- I just love having lots of buttons. To use it on OSX, though, you need to configure it on a Windows machine (or VM like Parallels) and it helps a ton to have a macro program for it on OSX. I use ControllerMate.
3751324
It's a great mouse, that's for sure. Here is the full review:
-Buttons may feel stiff at first, but with enough use, it loosens up a certain degree that I really like.
-Great build quality, mouse hasn't broken on me, LEDs still functional
-The logo is smaller than is presented in the pictures
-Sensor is extremely good, doesn't spin out, can detect flicks
-Side buttons have good feedback and I like to press on them
-Slight rubber coat feels great, although does take quite a few fingerprint after awhile
-Mouse feet are big, thus making the experience even better.

Now for the few reasons why this isn't a five star
-As a mac user, the USB doesn't have the best time working with the mouse, it often disconnects now, and has gotten to the point where it tremendously affects my gameplay, and this is the biggest issue that I've had. When this happens, the LEDs are sometimes on, and sometimes off, but the LMB and RMB don't work and the sensor doesn't track. I don't know if the issue is with the mac, but it wasn't like this when I first got the mouse. This is a very big issue that affects me.
-The cable is very stiff and hard to untangle, and it is an ugly red color.
-Mouse tends to get wet with 1+ hours of use with sweat
-Scroll wheel doesn't seem to be quite responsive enough, and is not really high up on the mouse, so the middle click is hard to use.

But other than that, it is an amazing choice for a mouse, and is my number one of all the mice I have owned so far:
Razer Naga
Razer Deathadder
Razer Naga Chroma
Logitech G502

And I also believe it is the more superior choice over the SteelSeries Sensei Raw.

*If possible, Amazon please send a new copy as this may be a defect, or contact me about it.

Hope this helped!
465014
Requires additional steps to work with some games like World of Warcraft but was easy to find videos to walk you thru the process. Really enjoy the customization options on this mouse, very happy I made the purchase.