Well I certainly wouldn't have bought a 2nd Pioneer if I didn't think they were worth it, and when I was comparing unit for unit against the Denon, the denon's were $100 more.
I can attest to you that if you go read the Pioneer thread at AVS, you will find less people complaining then the comparable Denon units... I can't speak for any other brand as I wasn't looking at anything else..
Just my lowly opinion...