I agree with Vicdamone. I just picked up a SC-07 for my home theater and am very happy with the performance and sound quality as compared to the Onkyo 805 and Denon 2808 I've previously owned.
I think the ICE amps in the SC-05 are very similar to the SC-07 although the power rating is different. It's absolutely quiet without any digital harshness. In my opinion, the Onkyo and Denon sounded lifeless and flat in comparison. It also wins in terms of looks and build quality. I haven't heard the Yamaha RXV-1900, but I have a Yamaha 5280 in another system in my home and have heard many other Yamaha receivers and feel that they are incredibly reliable and loaded with features but a bit harsh sounding at least compared to the Pioneer.
One of my biggest audio mistakes was selling my Pioneer Elite 49txi which was incredibly well built and sounded fantastic. The SC-07 reminds me a lot of 49txi.
I think the ICE amps in the SC-05 are very similar to the SC-07 although the power rating is different. It's absolutely quiet without any digital harshness. In my opinion, the Onkyo and Denon sounded lifeless and flat in comparison. It also wins in terms of looks and build quality. I haven't heard the Yamaha RXV-1900, but I have a Yamaha 5280 in another system in my home and have heard many other Yamaha receivers and feel that they are incredibly reliable and loaded with features but a bit harsh sounding at least compared to the Pioneer.
One of my biggest audio mistakes was selling my Pioneer Elite 49txi which was incredibly well built and sounded fantastic. The SC-07 reminds me a lot of 49txi.