After a bit of research and a sale, I now have a Denon AVRX4000 mated with a Energy CF-50 and my Martin Logan Dynamo 700, a drastic improvement over my solid but small Onkyo CD receiver. My viewing room is simply my living room and it is medium small, I'd say.
Questions:
Bi-amp: While I don't think the system is quiet, I find I need to turn up the volume more than I think I should to get it loud (I'm not deaf either). Is this just me liking loud music and movies or is something wrong with my setup? Should I try bi-amping? If so, and assuming I use the rear left/right surround channels how will that affect 2 ch. music playback? I'm using 12AWG wire (plain jane speaker wire from Home Depot) with banana plugs for all speakers.
RFI: should I worry too much about the Medusa of cabling behind the AV cabinet? I've tried to keep the power cables away from the speaker wire and HDMI cables, but can speaker wires be run parallel to each other?
Surround speakers? Budget current has me using my Onkyo branded speakers from the CD receiver for my surrounds. Denon AVR requires 6-16 ohm speakers, while the Onkyos are indicated as 5 ohm. Have I already voided my Denon warranty?
This is a great resource, the forums have already been a big help to me. Thanks all.