I am going through the same process in the same price range. Some of the answer is going to be dependent on the model speakers you have. I have SB-3 fronts, a KG 2.2V center, SS-1 surrounds and a SW-10 sub. I'm looking at the Pioneer 80. The Denon 2307 is a little too pricey and the 1907 doesn't do HDMI. I was all set to get the HK 245 but the HDMI doesn't do audio and I am concerned about HK's future since Circuit City dropped them and they have a very limited dealer network. The Onkyo's only have 50 MHZ bandwidth on the component video, where 100 is the normal. The yamaha 659 has great reviews, but does not do HDMI. This all led me to the Pioneer. I have read reviews on the 82 that say the sound is incredible and the 80 uses the same electronics and amps. It's a tough decision, thats for sure. I curently own a HK 125. I like the sound, especially with music, but my speakers could use a little more bightness. My opinion is the recievers from warm to bright are: HK, Denon, Pioneer, Yamaha, Onkyo. The high end audio store I buy from, the sales people all own Klipsch and Yamaha. This store sells Denon and Pioneer Elite as well as NAD and Rotel. One of the traits of Klipsch speakers is that at very high volumes they can get harsh. If you plan to really crank them up, I'd go with the HK or Denon. If you listen at mid to high, but not very high, the Pioneer or Yamaha should work great. I hope this helps.