I'm finally updating from a roughly 15 year old Yamaha RX-V795A 5.1 receiver with Definitive Technology ProMonitor80 speaker set. The main reason for the upgrade is to get more modern connections and features like HDMI. The old system has been relocated to my garage shop for music.I have inbound a new Definitive Technology ProCinema 800 speaker set as I was pretty happy with my prior set and this looks to be an improved version of what I had. I ordered items individually to make my set and got 6 promonitor 800 speakers, 1 promonitor 1000 center speaker, and 1 promonitor 800 subwoofer. Enough speakers for 7.1 so far.Here is my question. For use in a fairly small living room, I'm looking at the Sony STR-DN1040 receiver. Also looked at a refurbished Marantz SR6008 for about $200 more or refurbished SR5008 for about the same price. Any way to best decide on receiver for most features and connectivity for my speakers? I have Sony TV and DVD but am wondering if it would be better to have RCA in/out for all channels which the sony receiver doesn't have.Also on speaker placement, my room is wider than long, so the sofa sits against the wall opposite the TV. I'm trying to decide how to setup surrounds and whether to go with rear surround somehow or front height?Thanks for any thoughts on either subject. I want to buy another item to last the next 15 years. Thanks.