Had a disasterous weekend with my MB Quart S830 when team up with my Yamaha RX-V650. It souded horrible. I took it back to the dealer and they went thru a great deal convincing me that there is nothing wrong with it except my Receiver wasn't set up right. The pros there show me some hidden menu in Yahama that only show up when I hook up the Monitor out to my TV. They also recommended that I might to go with a true Hi-Fi integrated receiver like NAD C320BEE instead of the 7.1 receiver running in 2 channel mode. At the show room the same speaker that is hook up to a NAD C320BEE with some Cheap All region DVD player and its sounded amazing with nice Bass extension. I went home and locate the Speaker set up the pros was refering to and made the speaker size changes from Small to Large. It still not sounded right. I then discover there is a speaker distance setting, I then set it to 18 feet instead of the 10 feet default. This speaker distance setting had a dramatic effect on them. Its sounded a lot nicer after I let it run for 20 minutes. But still not as good as when my speaker running on NAD C320BEE in the showroom. So, My question here are : 1) do I really need to replace my 3 days old Yamaha RX-V650? And 2) what are the good Hi-Fi Integrated Amp out there for under $500.00?