I've had my eyes on those LEDs for a while, but I've also had my eyes on the 4,000s. I've wanted some of those for quite some time.
LED would be nice just for the efficiency, but it's hard for me to move away from proven technology. I know LEDs are known for their life, but every now and again, you get a dud. I haven't checked to see if those things can be easily serviced. Nothing looks more stupid than a line of LEDs with a dead one in the middle.
It doesn't look like I'll get either one, though, because these damned 500s
JUST.
WONT.
FUCKING.
DIE!
Geez. If you want a light that will last forever, buy a 500. I hate those things... I really do. They look so wimpy up there, the brackets are complete rubbish, and the beam patterns aren't ideal, but damn they take some abuse.
Cheers,
Kennith