Quote Originally Posted by cjurczak View Post
Seems everyone is using MOSFETs to switch their RGB leds, any reason not to use a darlington pair?
MOSFETs don't have a secondary breakdown when they overheat, so less chance of burning up. Mainly, no base resistor needed, lower drain-source resistance, practically zero gate current required (gate cap's make it draw a bit of current at high freq's, not much though.

The list goes on...