What is Good Quality & Simple to use AV receiver?

You can't go wrong at all with the Marantz SR6003. New/refurbished with factory warranty.

http://www.accessories4less.com/make-a-store/item/MARSR6003/Marantz/Sr6003-Dolby-Truehd/Dts-hd-Master-Audio-Av-Receiver/1.html

http://www.soundandvisionmag.com/content/marantz-sr6003-av-receiver

Plenty of muscle. It bench tests close to your requirements even in 7.1.

Bill

I like my cambridge 540R v1 got it for about 235$

NAD products tend to have more of whats important and less of what is tinsel.