I just picked up a couple incandescent bulbs from Napa and I think for my setup, I don't need to go LED yet. Only the driver's side light up as a running light. There is an issue with brightness for stopping with that tail light (mentioned in the other thread), but having the STOP light on the passenger side should keep me and those following me safe for now. Therefore, the only advantage I can see at the moment for LEDs is the reduced power draw, which I'll have to revisit in the future if I have a problem with headlight dimming or something.