Malcom, I don't currently have LED lighting in the kitchen but every other lamp in the home (except the oven) has been LED for sometime now. My kitchen lighting is a recessed panel in the ceiling that holds six 4 foot 34w T8 florescent tubes. I'm still exploring options to retrofit the linear florescent lamps with LED's. I'm a bit curious about what your concerns are with LED's. From what I see once you switch you won't even know you did.
LED's have come a LONG ways in just the past few years. We are currently seeing products that are doing 100 lumens per watt or better and this is in the warmer color temperatures even. If you happen to like a bit cooler light there are offerings over 150 lumens per watt. For reference an old incandescent lamp is in the 10-16 lumen per watt range.
Pricing has dropped by 3 or 4 fold over the past four years. For me when a 60w equivalent bulb hit $15 that was my turning point. I figure that a decent name brand LED lamp will outlast about four good CFL's and be slightly more efficient and offer better light quality. The lamp price is a push and not having to replace lamps is an added bonus. On top of that there are no warmup issues, I like the light quality better and the LED's tend to emit less RF, with CFL's I can often hear them on the radio when they are on...
I have bought and tested almost every A19 replacement LED lamp in the 60 watt equivalent class (~800 lumens). The first lamp that really impressed me was the 1st generation Philips 12.5 watt lamp with the yellow external phosphor diffusers, All the ceiling lights in my house are these (I have about 30 of these now). The later Philips models got a smidge more efficient and cheaper yet. My current most recommended basic incandescent replacement bulb choice is the Cree lamp sold through the Home Depot. These sell for $14 and they are the most incandescent looking replacement I have seen yet. They are dimmer friendly and available in a soft white or daylight color temperature AND they are made in America (try to find that in a CFL!!).
The next big change for LED's is when we can finally move into fixtures that are designed just for LED lighting. In most all cases trying to create a retrofit lamp that can screw into an existing fixture creates an undue compromise. Thermal issues are harder to deal with and it really doesn't allow the LED's the shine like they should. (pun noted)
I've been compiling a lot of photos and test information on various lamps and when I get it together I plan on starting an thread to share it all. I'd be glad to help anyone choose solid state lighting options. Personally I will never buy another incandescent or CFL for my home at this point.
