I am not a huge fan of wireless speakers but I have some. They are the RCA 900mz type but they seem to drift out of tune over time. I usually end up tweeking the tuning each time I use them. I really use the headset more than the speakers. I have a couple pairs (same model) and one is definitely better than the other (range and stability).
I really prefer running shielded (ground one end only please) twisted pair feeding a local amp. This seems to be the best way to get good, reliable sound.
