ive used them, they are a rather enjoyable light bulb, if your into light bulbs they way i am anyways....

Yes, but what if it uses OLED, or Prototype LED?

Can you buy OLED light bulbs?

i have led's in my car tail lights and am replacing my daytime running lights and turn signals later with leds

the benefits have been instant on, and alot less power consumption, and they will last forever compared to cfl's. cars like the audi r8 use leds for the head lights and tail lights. although on my last audi a4 my ballasts on my xenon headlights were the original ones, and still as bright as day one at 100k miles.

the only downside is that individual ones dont have a good light dispersion pattern, so it comes down to how well the bulb is designed, for my drl, it uses a 19 led design with the majority facing forward, and the rest making a ring around it. for cars, led bulbs aren't much more expensive than regular ones, and no cfls are used because of the startup time.

dude LED's are like two dollars

http://www.radioshack.com/search/index.jsp?kwCatId=&kw=led&origkw=led&sr=1

Dude, LEDs are like 20 cents.

--Cr@sh

Generally yes, LEDs are the way to go, but as was stated by red_eye_wonda it depends on how they are set up. Always research the how the bulb settings are. What most things people don't mention is that even though CFLs are said to last longer then florescent, what isn't mentioned is they don't always last as long as written on the box, usually you get about 1/3 more time, but at the same time, compared to LEDs, they're much more expensive. A lot of times you can get conversion kits to for your flashlights that use actual bulbs, you can see the difference there for usually cheap as well.