Steven, I had to come back to this topic because I found an interesting article from a pro computer magazine (Feb/2005 issue). It introduces Sennheiser RS 85-8 which is supposed to be their #1 of wireless headphones. The cost is about $270, but if the set is good, I'll be running to the store. The article referred to the basic supermarket models just as I did, that no good ones are available there so far.
Since it's common knowledge how well Sennheiser is doing with microphones and professional sound reproduction technique, I think I'm gonna try and get my hands on one of those sets. At least it looks good in the picture
If I can test it I'll come back with the results.
Cheers!
jee