As title says it all, which should I go with to use as rear surrounds? I have the Denon 2805 which is compatible with DPLIIx and will be using the DS6 as side surrounds for sure at about 2 feet above ear level when sitting down. The saving of $$ by going to DM600 can apply to my upgrade of fronts to the 805s w/HTM2. The DS6 as side surrounds will be directing next to me and either the DM600 or DS6 will be about 5-6 feet behind me. The surrounds will only be used for HT with no multichannel music at all. I'll only use the 805s w/ sub as stereo music listening only.