[H] Multi-handset phones 5.8 GHz

[Anthony Q. Martin]

I need to identify a multi-handset phone system that has good volume 
levels on the other end. I currently have an oldish Panasonic 5.8 GHz 
Digital FH system but I get a lot of complaints from friends about not 
being able to hear me. I feel this sometimes has an negative impact with 
ladyfriends. I've thought that perhaps the problem was really with one 
or two of the handsets, but I haven't rigorously tested it yet.

Which multi-handset units are you guys using (assuming you're using any 
one of them)?