I finally found the perfect receiver for me. In the past two weeks I tried these receivers: HK AVR-230, Onkyo TX-SR601, Denon AVR-1804, Yamaha HTR-5660, and Yamaha RX-V640. The perfect receiver for me is the Yamaha RX-V640. I know the RX-V640 is the same as the HTR-5660, but I felt that the RX-V640 is superior than the HTR-5660. Here is a brief comparison on all the receivers that I tried in the past two weeks. This comparison was done with Polk Audio Speakers (RTi38, FXi30, and CSi30) and my Yamaha YST-SW305 subwoofer. Now time for the brief comparison. HK AVR-230 I did not like this receiver at all. It had muffled, muddy sound. Build quality was poor, because some of the analog output and inputs were loose and even some fell off. Onkyo TX-SR601 This receiver was very good for music playback and it was good for movies surround sound also, but not to my liking. This unit had excellent build quality. This unit was a few inches too long in length and the front part unit was pass the edge of my entertainment center's shelf. Denon AVR-1804 This unit was very good in music playback sound quality and the sound quality in movies was very soft. Build quality is top notch on this unit. This unit could not decode Dolby Digital EX and it lacked a few features. I felt that this unit is overpriced. Yamaha HTR-5660 This unit has very good in sound quality for movies and good, but slighty bright sound quality for music playback. Build quality is very good. It also has a lot features for the unit's price. Yamaha RX-V640 This is the same unit as the HTR-5660, but I felt it is more superior. The sound quality is very good in movies and in music playback the sound quality was not bright like the HTR-5660 or too warm like the Denon and Onkyo, it was smooth. Build quality is very good and it has the same features as the HTR-5660. Ranking 1. Yamaha RX-V640 2. Onkyo TX-SR601 3. Yamaha HTR-5660 4. Denon AVR-1804 5. Harman Kardon AVR-230 Summary The Yamaha RX-V640 fitted all my needs and wants in a receiver. It also goes well with my Polk Audio speakers and Yamaha subwoofer. I like the RX-V640 a lot, no I don't, I LOVE IT!!!!!!. So, my quest came to an end and I found the right receiver for me.