Since I'm the one who started this whole thread, I probably should mention when the time came to blow the cash on cheap radio triggers, I went for
Yong Nuo RF-602s instead.
This was because I needed a shutter remote for my 50D, and the RF-602s can do double-duty as both flash triggers and a radio-based shutter remote. Also, the RF-602s operate on the same radio frequency as Cybersync triggers (4.2GHz, vs. 433MHz for the V4s). I don't use the triggers much, so I can't tell you if they're more reliable than the V4s, but I like the fit and finish, and so far I haven't had any misfires that weren't from obvious user error

. I tested and got a 700' range for flash triggering.
The main differences from the V4s are that there are no external antennas on the transmitters. And the contacts on the transmitter/receivers are brand-specific (i.e., the extra pins, aside from the central firing pin, are included). The triggers do
NOT do i-TTL/e-TTL, but on the Canon side they
do perform flash wake-up. I've heard varying reports on the Nikon side about the success. If you're a Sony shooter, I believe the RF-602 packages usually come with hotshoe adapters. They have Sony and Pentax packages as well.
Cost-wise, they're roughly the same as V4s.
And apparently Yong Nuo
finally figured out their main use was as flash triggers, not cable releases, so you now get the 1/8" minijack cable and 1/4" jack adapter with each additional receiver, rather than additional shutter release cables.