I did a quick search and found that the Pioneer doesn't touch any digital video signal coming in, which may be a good thing in some cases, but if you are looking for some sort of video processing (upconverting or whatever) it only does that on analog inputs. Otherwise, I am finding that if that isn't an issue, you get a little better "value" with the Pioneer for what people are calling "mainstream" features (does it play audio well? does it have good power handling? does it have lots of inputs and outputs? etc).
For straight up audio work, any of those should work. It comes down to the bells and whistles. Some have Audyssey, Pioneer has MCACC which is pretty darn good too so that becomes a debate over which is better, blah blah blah... Tough call. You should be happy no matter which way you go.
