First time using wireless headphones; very satisfied

After doing a lot of online research, I bought a set of Sennheiser RS140 headphones on eBay a couple of weeks ago. The sound is excellent. I read some reviews that complained about hiss, but I've found that there is no hiss at normal volume levels. If I turn up the volume on the headphones, there is some hiss during dialog, but the dialog is almost too loud at that point anyway. The sound is great at a proper volume level, and if listening to music at higher volumes, you can't hear the hiss. Overall I'm really happy with them. As others noted, they are comfortable, too. I really only use them to watch TV while my wife is sleeping, so I haven't tested their range.