They are pricey, but they last alot longer. The one I have is like a 30 yr life. with a 5 yr warrenty no question ask.
KenWood
I agree with that your only problem with LEDs though are the tech is changing SO fast... more than likely you'll have replaced your current light within that 5 year window. I'm already starting to feel left out with the Procyon but hopefully with some CFLs I should get some interesting results. BTW - what light are you using KenWood? One of LEDgirls?