Hi all: Am just about to purchase my first HT receiver, but have a question about speaker placement that WILL influence the receiver I buy (great deal going on a 5-channel H/K AVR520). My HT room is really a family room, sized 20*15, with one 20' side open to the kitchen and breakfast room. The 36" TV is set up on one end of the 20' length, and the main couch is against the wall at the other end of the 20' length. Viewing distance is about 15'. Since the main viewing couch is up against the rear wall, I will have to point the rear surrounds (in a 5.1 setup in from the side. However, if I were to add the 6th, or heaven forbid, a 7th channel (extra set of rear surrounds), where could I put these to have good sound? Moving the couch out from the rear wall a few feet is NOT an option - SAF I wouldn't want to put them right behind (i.e., within 1-2 feet of ear) the couch because of separation of sound issues. If I were to wall-mount the 6th or 7th channel (with a directional tweeter), would the sound compare to a set-up with external speakers? Or perhaps I could mount them on a bracket and point them down over our heads? I realize this would cut down on adjustment options for speaker placement. Still, would it offer the benefits of the 6th and 7th channel sound? If the limits of my room really prohibit a good 6 or 7.1 setup, it is PERFECTLY FINE with me. I am just trying to decide whether to go with a 5 channel amp at the moment (great deal) or spend more for a 6 or 7 channel amp. Thanks for your help.