Pocket Wizards are the way to go. I'm looking to pick up a few more receivers.

And here's some good reading -
http://www.sportsshooter.com/news/1355

I have three sets....
A Chinese cheapie set...
Quantum set....
Pocket Wizards II....

Wanna take a quess which ones I use and rely on the most ?

I've got 4 of the cheap Chinese ones. I'd sell 'em really cheap, but they really aren't worth the value of a nice shipping box. Sometimes they work, sometimes not. Range is at best 16 feet. Sometimes 2 work, sometimes three do. They do provide some interesting and unexpected lighting effects, if you like that sort of thing.

I got a Tamrac Micro Sync.  I love it. The transmitter is about the size of a (5 stick) pack of gum only a lot thinner.  Because of it's small size, it's probably a little fragile. I store mine in a plastic prescription pill bottle to offer a bit of protection when packed in my case.

I thought about the pocket wizards. They work. Really big though, and more money.

PWs they way to go.