I like LEDs, but I am extremely fussy about color temperature and, more importantly, CRI or Color Rendering Index. CRI is somewhat flawed and is not a perfect predictor of light quality, but it helps as a datapoint. Most LEDs, even in the supposed warm color temperatures, have a blue cast I don't like. And they are way too source-dependent - consistency is poor and a lot of them bring out really weird overtones. I have LED undercabinet lights in my kitchen, and they look fine in general... but as soon as you put meat under them, it turns a nasty purple. I have to make sure the overhead halogens are on to get a good idea of the doneness.
There are really really nice LED replacement lamps available that put out really good, high quality light, but they are still on the expensive side. The technology continues to improve, but the consistency isn't quite there yet.
I don't like fluorescent lighting of any kind. Even the best has terrible color rendition and temperature, and they flicker at 60Hz (or whatever your local AC electrical standard is). That drives me nuts.
I vastly prefer, subjectively and aesthetically, the cozy yellow/white from a halogen. They aren't as yellow as a traditional incandescent and are about 10% more efficient. They're still not efficient enough for this day and age, though. I use them wherever color rendition is most important.
which is also rare.
