Will be buying more as my CFLs burn out.
591496
Nice bulb, puts out good light. Seems unbreakable. Use this at my computer workstation floor lamp.
3281042
I like these so much more than my old CFLs. There's absolutely no comparison between these and the old incandescents (shown in pics), that I was using before.

LEDs look nice, the filaments look futuristic. Unlike incandescent bulbs, LEDs don't run hot, or waste power and I won't be replacing them in a few short months.

I received this item free or discounted in exchange for an honest review.
3820886
I used one of these in my last apartment and was very happy with the brightness and the daylight color (not typical warm-yellow but much whiter).  In my new apartment, I have three spotlights in both my kitchen and my dining room and I've used these daylight CREE's in the kitchen and am hugely pleased.  (I used warm light CREE's in the dining room on a dimmer and am also very happy with those, although I will note there is a very slight delay when these are turned on using a dimmer.)  The power consumption is less than a third and there is far less heat coming from these than older bulbs.
I have not come close to finding out the durability of these CREE's - the previous bulb was transferred after about 2 years service and I cannot tell it from the new ones.
1049831
Bought one to try, plan to buy a dozen more.
I like the light, but it's definitely a 'cooler' color temperature than a standard halogen.  Given how quickly halogens bulbs burn out and there ridiculous heat, I'm a believer.  I'll just have to see if they last as long as advertised.
2636830
The n:vision compact fluorescent light (CFL) bulbs, now sold under the EcoSmart brand name, are simply the best CFLs on the market today. The economic and environmental advantage of CFLs over incandescent, even taking into account the presence of mercury in the former, has been discussed many times over. As CFL prices have fallen significantly, aesthetics have remained the most common barrier to adoption. But the n:vision/EcoSmart Soft White CFL bulbs cast a warm, steady golden light, almost indistinguishable from that of an incandescent bulb. The color, brightness, silent operation, and lack of flickering make this bulb a true standout among CFLs. Note that the 14-Watt EcoSmart bulbs, while less bright than their 19-Watt big brothers (the two being equivalent to 60 and 75-Watt incandescents, respectively), brighten almost instantly; it is difficult to live with slow-to-warm bulbs after using the 60-Watt EcoSmarts. I probably sound like I've been paid to write all this gushing, but I'm honestly wild about these bulbs. The only thing to keep these bulbs from being perfect, in my opinion, is that they do not dim; if you are looking for a great dimmable CFL, I highly recommend the PureSpectrum 20W Fully Dimmable Spiral CFL bulbs.

Compared with other 75-Watt equivalent CFLs, such as those of GE and Satco, the EcoSmart (also sold as n:Vision) 19-Watts seem superior all-around. They are neither more nor less bright than the GE CFLs at full brightness. That said, they warm up much, much more quickly. The GE bulbs take 1 - 2 minutes to reach full brightness, and initially cast light equivalent to an incandescent dimmed almost all the way down. The EcoSmart 19-Watt comes on with an initial luminosity that I'd say is somewhat (about 20%) dimmer than the peak luminosity of the EcoSmart 14-Watt. It soon becomes brighter to the extent that one might expect. Compared, again, to the GE bulbs I've used, the EcoSmart is significantly brighter at first, and it warms up in roughly half the time it takes the more common GE bulbs.

In other words, the GE CFLs have nothing over the EcoSmarts. The only real question here is whether to go with this bulb, or its smaller cousin, the EcoSmart/n:Vision 14-Watt Ultra-Mini CFL. The latter has a lower peak brightness, of course, but is much smaller, and even quicker than its larger counterpart; I don't perceive it to have any warm-up at all.

Anyway, both bulbs have limitations. First and foremost, they are not dimmable, and if you try to use them in conjunction with a dimmer, you will likely damage the bulb.

Of course, if you dislike the helical bulb design, and want a CFL disguised as a traditional incandescent, EcoSmart sells "A19" versions of these same bulbs, which are covered bulbs. I have yet to try these.
1645287
I'm in the process of replacing all the CFLs in our house with LEDs. Two of our lighting fixtures require bulbs with a GU24 base (I'm in California). The only problem is while in California they want us to use GU24-base bulbs it's difficult to find bulbs with the base for a reasonable price!

After looking around online, I bought these. The price was right, they're UL-listed, and the light color was what I wanted. So far so good. They fit our lighting fixture just fine (see pictures) and they're very bright. I'm using one each of these in the upstairs hall and the laundry area.
4431487
If you are looking to lower the lighting bills/decrease your environmental footprint, but don't want to shell out big $ for LED lights for the whole house, then these lights are awesome!  They actually light up in two separate stages.  At first a slightly brighter, pre-light comes on to give you instant illumination.  Then, roughly 30 seconds later, once the CFL has "warmed up" the energy efficient CFL kicks in.  Its the best of both worlds if lights tend to get left on in your house.
3226506
OK, have done some "spot" replacements of CFL bulbs in my house and I'm really impressed, particularly because of the "no-warm-up" full-intensity light at the moment the bulb's turned on. To their credit, CFL's were remarkably energy-efficient when the alternative was ONLY incandescent lighting, but I've been using LED auxiliary lighting for years on my motorcycles, trailers, pickup trucks and four-wheel-drive SUV's and their reliability under vibration and temperature transients, as well as extremely high light output (lumens) for the same current demand have led me to replace every incandescent fixture with an LED equivalent. Now, with the price of LED bulbs dropping to a point that make them economic to buy as well, I've begun doing the same with household lighting; this round sees all the fixtures in the kitchen, bathrooms, porch, carport and shed acquiring daylight (5000K) LEDS because they more accurately render daytime illumination - things are easier to see with the same power bulb, although shadows are more pronounced and colors tend to be harsher with those bulbs. My significant other and I differ on what should be used in the bathroom - I prefer the 5000K for illuminating the sink because I get a better idea of what my shave (or lack thereof) is going to look like in public, she likes the 2700K because the softer light permits her to focus more intently on makeup application and facial grooming (something I'd not considered when I replaced the bulbs in the fixture over the bathroom mirror). So, the CFLs, which do "soft white" very well, are back in place and no one's unhappy - next purchase I'll see if 2700K LEDs do as good a job in places where soft-white is desirable as the 5000K bulbs did where it's not.
1894554
Bought 2 sets of 6, needed 8.  None arrived broken, but one did not work at all, and one blew out the next day, so I'm really wondering if they will last anything near the 7 years promised.
I am however thrilled to find CFL's that both fit in my small (maybe 12", 2 bulb) overhead fixtures and give a nice amount of light.  Previous attempts either resulted in cracked bulbs as we tried to fit the fixture cover around them, or those that were small enough to fit, gave out so little light that my dog was asking for a seeing eye dog.
So, even though the power use savings is probably negated by the dud bulbs, I would be pleased if these last a few years because they give off great light, and not having to change the bulbs in the tricky overhead lights for years would be worth the cost!
266576
Our master bath has twin vanities with 16 lamps at each. Originally had 60W incandescent lamps. At 960W each, I decided to replace them with the CFL's when they were offered in a vanity version. They were ok for a few months, but soon became annoyingly slow to come to full brightness. The LED's were finally becoming available in more configurations and when I saw these, I decided to take the plunge and eliminate the last major lighting use in the house. These provide 'instant on'  and nice light quality. Hopefully, their longevity will prove to be worthy of their cost. I have spent more on light bulbs in the past 5 years than I probably did the previous 30.
4493120
Super happy with these, I got a 15 watt as well.  Light quality is a little white/harsh, so not suitable for an area where you want soft light but works great for kitchen or laundry room or similar where you want nice bright light.  Dimmer feature works pretty darn good too.  Not as dimmable as an old incandescent but goes much dimmer than any dimmable CFL I've tried. And never flickers or hums at dimmed settings like CFLs.
3750975
Bought 3 to replace icky CFLs in the garage.

Live in a cold climate this time of year and those CFLs, besides looking awful, take minutes to produce any usable light.

These LEDs turn on immediately and are at full brightness and makes the garage so much easier to naviate
4778736
Great economy.  My power company sent a notice that I used less energy this last 12 months than the previous 12 months.  To date, I've replaced 54 incandescent of CFL's with LED's.  Use the ones marked "daylight" rather than bright white or soft white, they're more economical to use.
598688
Saves huge amounts of electricity.  Bright. Better than CFL's.
3192297
Update: 2/6 have already burned out. We use them maybe a few hours a day. Not even close to the rated lifespan unfortunately.

Original Review: A little brighter than the existing 13W (60W equivalent) CFL's that were installed before.

Every bulb in the box was in great visual condition, packaging was good, and they all worked.

They are even brighter than my 13W CFL's installed before. The color feels about right for 3000k. Slightly yellowish, but more white than yellow.

These are 9W bulbs, so for my 6 bulb fixture above my dining room table I'm saving 306W over incandescent, and 24W over the CFL's. Be glad to have the CFL's out due to the Mercury in them though.

I will update if I have any longevity issues. I'm certainly not expecting the 25,000 hours (~23 years @ 3hrs/day) they are listed for though.
4401555
These are great. Bought mine from Vktech handled by Amazon. The remote control puts each light on a separate switch/button (A, B, C, D), basically one push on, and push button again its off. I used it to power 4 lights; 3- 120W Daylight equivalent CFL bulbs (Compact Fluorescent Light) on my fan, and one on a lamp on the dresser. I can have as much or as little light as I need/want and I can leave the controller at the desk or bedside in bedroom. If you come in at night and light is off in room, no problem just flip light switch off and back on and all lights are on, switch works normally, get to the remote at desk or bed and you have full individual remote control again.
One note the light bulb socket is deep on the remote bulb adapter. I found that one of my old CFL bulbs had a short base that screws into socket and it would not screw in enough to reach the center contact at the bottom to power on the bulb. My newer CFL bulbs did not have that problem. Also the adapters are large in diameter for some fixtures as well will extend the bulb too much to fit in fixture. I personally just left my covers off more light for me.
3786719
These are great bulbs. The warmth and intensity of the light is perfect, and colors appear natural. Bought these to replace a set of daytime cfls, and I have to admit these are the closest to incandescent I have seen. No hum at full intensity or even with a dimmer. Buying more sets to replace the rest of the bulbs in my home.