What are options for 7.1 PRE/PRO for around $1400

New or Used

Trying to go to amp + pre/pro route from HarmanKardon Receiver.

by the way, I'm not sure when I'll be able to upgrade it again, so I'm trying to get 7.1 at this time although there are great deals on 5.1s out there... what do you think?

Thanks...