Ask the installer for a look at the HAI system, installed.
I've never seen the HAI Hi Fi system, but on a webpage it looks kind of lacking.
http://www.homeauto.com/products/wholehome...lehomeaudio.asp
Do you have 8 ohm speakers, as most people do? Or are they 4 ohm? HAI Hi Fi specs state 10W/channel with 8 ohm speakers.
The Russound C-Series would be the Russound system of choice, IMHO. Take a good look at the Nuvo GC, though.
Both Russound and Nuvo GC mate well with the HAI, from what I've read.
Metadata (song info) at the keypads was a requirement when I was shopping around. Systems from Nuvo and Russound both have this. I chose the Nuvo GC, and I'm strongly considering an HAI install.
The C-Series is the newest offering from Russound, and I'm guessing they'll be phasing out the CAV and CAM systems, though maybe someone else who is more educated on the subject will chime in.