Like it, Tough and good to go
340263
Like it a lot. Will hold a full nalgene liter bottle plus. Maxpedition makes some tough gear... got to like that. The only downside is the lack of a strap, must be ordered seperatley.
2971049
This is a nice product, tough and good build quality. I vacillated between this one and the smaller size, and I'm glad I went for the larger size. This fits a tooth brush, toothpaste, contact case, small saline solution, and maybe another knock knack or two. Overall, I'm happy with it.
750681
I've had this for quite a while now and still love it, it had replaced two pieces of equipment. It is tough and rugged, the only thing I've had happen is the collection bag's zipper had come loose at one end and will need to buy another bag or try-n fix this one.
3058682
It feels tough and it's not too heavy.  I am carrying my big pole plus a smaller second pole (I think I could fit a third).
1338995
The Tough System is the way to go, well worth the money.  I've bought 3 of these so far, the last ones I'll have to buy
2961583
i bought this because it says it's guaranteed tough.  so far, it's living up to their word and it's holding up to my chewers.
4408610
Will be using this on my first GoRuck challenge.  So far it feels great, been walking around with it and it's very comfortable.  A couple of complaints and yes I am being picky, but I wish there was a portable/laptop compartment or at least a molle webbing inside that I can somehow create a secure portable/laptop holder.  Also I wish that the side pockets can hold a water tumbler (again being picky).
4903894
It does what it says, protection + I like it.
2698288
It's pretty good at its job. My workplace has me carting a toolbox around the country, and it tends to fly open at the worst times (it's pretty worn out, and the latches don't hold well.) More than once I've gotten my toolbox from the airport baggage carousel in a plastic tub with loose tools piled into it. I can't use a lock because the TSA will break it (My box has never NOT been searched, go figure,) and removable zip ties break too easily.

This strap does a good job holding my toolbox closed. Only thing about it is that after a few runs through various airports (across 4 months), the material is starting to wear. I try my best to keep the plastic bits (clips and adjustments) in places near the feet, so they don't get abused, but I don't think the TSA has the same idea. So far it's holding, and I think it'll be good for a while still.

Overall a great tool, but needs to be a bit tougher in my opinion. I would happily pay more for a more resilient material.
3057779
Works well, tough. Kickstand is a nice touch that doesn't add much bulk
900592
hard to beat!  tried several but this one is tough
2022855
Comfortable fit, tough material, looks great.  only negative is the bill is a little stiff and hard to shape but its still rather new and I'm sure it'll soften up and become easier to shape
554041
UPDATE:

Less than a year now, and the tearing at the shoulder strap that started really early on progressed rapidly on the last two uses.  This is NOT the bag to carry expensive gear that you're attached to.  Have not heard back about the failure.

I've been using this backpack with a Canon 70D, Sigma 17-55, Sigma 70-200, and Sigma 18-300.  There's plenty of room in the hatch for a ex-430 flash, flash modifier, Canon G9 (IR converted), remote wired trigger, couple of spare batteries, multitool, battery charger, cleaning cloths, Joby DSLR gorilla pod.  In the front, I keep a Dell 13" 2:1 laptop, the laptop power block, a power block and cord for my phone, a portable power bank for small gadgets, and often keep a paperback for the plane, or other cables for small electronics.  It can get pretty heavy, but distributes the load pretty well.

I've taken it hiking and slid with it down a dozen or so feet of muddy incline.  It protected all the gear in it.  And, it cleaned up fairly easily.

After using it for more than half a year now, I really like it, and am considering another one to pack my Epson EX7240 Pro projector and all the cables, BT speaker, etc that I haul with it.  I did notice the stitching where the shoulder strap meets the top loosening and opening up.  It worried me because I carry some heavy & expensive gear.  It may just be a disturbing cosmetic union though.  It doesn't seem to actually bear the weight of the pack.  That seems to run to a deeper connection that I can't see, or get to without pulling things apart.  The top handle is rock solid and has served me well hiking, in airports, etc.

Pros:
Lots of room for a variety of things
Really versatile in configuration
Generally well built
Cleans well

Cons:
Some cosmetic stitching not durable
interior spacers a bit weak holding the walls (very little slip though except when I'm carrying my heaviest gear and slinging it around a bit climbing)
3591460
Takes a beating, feels solid, and looks good.  What more could you want?
4080435
tough and just the right fit for my needs  only small caveat  it would have been nice to have something to attach a strap or tie of some kind to secure the box from sliding around. Put something heavy in it and take off up a hill if might hit the tail gate hard enough to end up on the hood of the car behind you. I wrapped a strap around it and tied it to the tie downs in the bed but that means it has to be located at the back of the bed. But all in all the box seems pretty nice and I am happy with it.
3090767
like it, I am using it, comes in real handy, as I go tedgeing along on my aventures, from here to there!
1915925
I bought two of these and one was really tough. It was kind of hard to use, but the second was easier to use. Its not bad. Works well