Hey John
Wendy and I use an
Autocom system.
I used to joke that being on the bike was time to be away from the OL (or the kids) but on some rides it's good to have a chat from time to time.
I gotta object to the ability to attach a phone though ... grrrrr.
Plus, Wendy's so good as pillion, half the time I don't know she's there so the ability to say 'you ok?' from time to time means I know she IS there

For the minute we run it on the 9V battery but at some point I plan to get it hard wired to the bike.
Sound quality is great (I believe they guarantee 'em to something like 150+ mph).
The problem I had was with my US openface. I got the mic wind protectors but the bloody earpieces wouldn't fit .... half helmet .... d'oh!!!!