Great light, very white
342950
Great light, very white. Using it for a 5 gallon planted tank, and the plants are growing great without any CO2
3336239
this light is great...hard to install with tiny screws but use adhesive strip for easy install...excellent light...I have cool white and love it...cool white is brighter than warm light but warm will blend in and more subtle
4195442
Love the light these bulbs put out. My kitchen is super bright now! Love it. The light is bright and white. Unlike "Daywhite" bulbs 5000k which look blue or "Softwhite" that look yellow, these are more white and vibrant. These are 4000k.
2312985
I purchased the Warm White version and in general was happy with the construction and quality of the product - and the fact that it is plug-n-play with no need for a transformer is great.

My biggest complaint is that the light quality is on the high end of "warm white."

Warm White is considered from about 2700K to 3500K - and these are definitely on the cooler end of that spectrum. I was looking for something closer to 2700K and these - I'm guessing - are about 3000K -- and too cool for what I need (a wall sconce that I'm building), hence four stars instead of five.
3501057
I bought and installed this about 4 months ago. It is very bright white light. It has worked well with no issue at all.
The metal mounting bracket is somewhat flimsy, but adequate I guess. It has no photo control, with only a short @ 12-18 inch cord that would tie into a junction box with proper connector to be water tight. I replaced an old standard dusk to dawn light with this. The light is directional, meaning that compared to the dusk to dawn light, it does not throw light all around in a 360 degree area. One light actually was so bright that the 2nd one I bought I did not install. Gave it to my parents who did the same as I did. Once you mount it the only adjustment is up and down, that is if you mount the light with the bracket horizontal to the ground.
2622695
This is a great light - well made, light weight, and really bright, white light. And it accepts both 18v batteries (and 14v batteries as well). Goes 6 hours on compact, 13 on full size battery. My only criticisms are: the switch is really touchy. Sometimes I accidentally switch it off just trying to move it or carry it.
Also, I wish they could have come up with a way to stow the hook when you're not using it. It's really handy but when you're not using it it's just dangling there. So you take it off, and then , of course, it's not there when you need it.
1401583
They are bright and the light is a very nice temperature of white. It's not the unnaturally bluish white of 6000K lights, but it's not as yellow as the 3000K warmer white. It's just a really nice white, very much light the moonlight. The only problem is that I've not been able to find other lights out there in the same color temperature so these lights stand out as different even though I like the color better.
4671708
Theses were very bright and worked great. The problem was they were just white and i thought they were the color ones. They are still great and had a nice little switch to turn on and off.
4557364
Great buy, with two cautions.  Not necessarily a product issue, but still notable:

The light color is very white, I'd estimate 4,000 K, what used to go as "cool white."  It's actually closer to sunlight, but definitely whiter and brighter than the incandescent yellow we've all grown used to.  Personally, I like it, but be forewarned.  LED bulbs are available in "warm white" as well (3,000 K color temp).

The bulbs are dimmable -- to a point.  When you dial down the dimmer and reach, say, about 30% of full brightness, the bulb begins to flicker.  That I did not expect.  Not sure if this is just the way LED bulbs work, so I am reluctant in taking one star away from a full 5-star.
2436173
awesome white light in all directions. Can deal with dimmers and is a good bargain for the price. Would buy it again.
3441292
Great light.  My halogens gave out quite quickly, so I was glad I had some of these on order.

Replaced 50w halogens in my outdoor Paradise lights with these.  Quite bright, quite clear light and impressive.  But warm white?  My neighbors have some 'warm white' lights, and I'm pretty sure they're halogen.  I don't think these look quite the same.

I have some other LED bulbs on order which are supposed to be 'warm white' so I'll see if those fit the bill.

Otherwise, these are great for the price and recommended.

EDIT:  I have to say that, although they are not quite as "warm" as some other lights, like halogens, they are pretty close.  I got a different MR16 bulb recently that is rated at 4000k and I can really tell the difference between that one and these.  These bulbs are much warmer than a 4000k bulb, but I have to say that with different LED makers, the light and the color and the lumens can be quite subjective.

I'm looking at getting a few more of these in the meantime --- they really do quite well for outdoor landscape lights.

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43746
these bulbs give out excellent bright white light.  The area that they light is not as large as the old fashioned kind of bulbs, however .
2437315
Very bright, very white (not really warm or bluish either) with a ceramic-feel to the casing. It has the usual multiple LEDs in the element. It gets slightly warm, but not uncomfortably hot. The casing seems to be very strong and not a cheap plastic feel to it. I think it is awesome to get such a bright light output with only 14 watts of power! I think I may order more of these and replace all of the lamps in my kitchen with this product!
1990304
Really nice white light, bright enough for anything yet doesn't carry far so you can use it in a closet and not wake your partner. It's sensitive!
3356851
i prefer pure white; but all in all, great spotlight for a cheap price.. XD
4594728
Great light so far.  Very bright and nice white light.  Replaced a 175w metal halide fixture that is installed a large led bulb in.  Still waiting to see is this saves any electricity not having the ballast.
1305517
I love these lights. I have been using them here in Florida for a while and one of them does not get a lot of sunlight during the day and still it performs very well almost lasting the whole night.

My only take is that their light has a blue tint rather than pure white. I had similar lights before and they were 5000K white, but this one seems to be more 6000K or even 6500K. I like the white light more and that is the ONLY reason I am giving them 4 starts.