As far as automotive LED's and some home and industrial stuff, I normally frequent Oznium,
LEDs - underbody kits, cathodes, flexible LED strips, dome lights
I find them to be fairly inexpensive on the automotive side of LEDS and they make replacements for just about all bulb types.
I too am waiting for the home bulbs to come down in price before switching from my CFL's, in the meantime though I may use some strip lighting LED's along my floors in place of actually turning on the overhead lighting.