I'm a big fan of the 1015. It was my first receiver and I bought it after numerous recommendations. I'm running a full Polk setup. I love the sound of the Pioneer until - I tried the 5960 from Yamaha. Main reason I got it was because I really needed the extra optical for my Xbox 360 and Ipod connection. Holy hell! It felt like I was hit with a tidalwave of sound that just opened up. The sound presence and immersion was noticably more pronouced than I remembered. I plugged the 1015 back in. Not the same. Went back to the 5960 an there it was. It was just an added clarity and a thicker midrange added to the surround feel. Both amps on DTS Neo, playing Gladiator's 1st Collesium battle sequence.
Tried some music, ranging from classic compositions, to rock to hard hitting trance. Sounded good. Put on ''Pure Direct' and the sound had more detail than the 1015's direct stereo mode.
I find that Yamaha's DSPs are more usable and sound better than Pioneer's. It also seems to have what appears to be a better power amp section, or maybe it just matches Polks better. I'm gonna give it a week to see if it's due to the "honeymoon phase", but right now, the Yamaha is going to replace my 1015.