Actually guys..the revised version still has problems with the 430EX. I still get misfires on mine. But...they work well enough, and they have a great range. I think about 20 feet indoors and about 10 feet outside without interference. I shot my last 2 pictures on the previous pages with them.
In the future I think I'm gonna get the Wizards instead.
Regarding the flash sync..for those with XTi or XT are still ok since our cameras only go up to 1/200 in sync anyways.
I have RF Remotes I bought on eBay. They work just fine up to 1/500 on my Nikon body and SB-600 flash. I think the actual sync limit on the Remotes is close to 1/1000. The limiting factor in the case of Canon's appears to be interaction between Canon and the Remotes.
On a side note, the folks over at Strobist.com were talking for a second about designing their own remotes, or even a their own flash with remote trigger built in. I haven't checked the discussions in a while but I think the talk fizzled. It is interesting to think that there are no small, durable, off-camera flash heads. The idea is to take on-camera flashes guts (batteries, flash unit, manual power adjustment) and place it in a more durable, smaller, lighter form factor, but that would only be usable off-camera and only in manual or very basic TTL mode. I'd buy one...