Thanks to everyone for responding to my post . I respect the opinions of all members of this forum . Although I really don't post on here alot, I do enjoy hanging out here and reading what people have to say. I currently have a Marantz SR5002 paired with a Marantz MM9000 five channel amplifier. I have Sierra One bookshelfs as the front three in my 5.1 system, accompanied by a Velodyne SPL1200R subwoofer. My SR5002 has never given me one ounce of trouble. But it does not even have Audyssey onboard. Just some generic room equalization from Marantz. I tried using it, but the results were way off, so I did it myself with a trusty Radio Shack meter.
I have narrowed my choices down to The Marantz SR7005, the Marantz AV 7005, or the MRX700. I can get either Marantz through Amazon. So I would in effect have a free 30 day trial with either one. If I purchase the MRX 700 from my local dealer and am not satisfied, I would just be stuck with it should I not like it. He also said the MRX 700 has ample power for my 14' x 13' room, and he said I have to decide whether I want to calibrate the MRX700 with or without the amp, because the results would be different. To make my decision even more difficult, the SR7005 is being offered on Amazon for less than a grand, new and sealed from an authorized dealer. The AV 7005 is only a couple hundred dollars more. So now we are talking $500-$700 more for the MRX700. I would appreciate any advice on this matter.