Yamaha model?
What makes the Denon better?
I know when I replaced my Onkyo with a Yamaha, the Onkyo then $u(ked.
However, they were not direct competitors. Onkyo was pro-logic. So anyone could imagine how a 7.1 Yamaha was better. Heck, I am sure any brand 7.1 receiver would've been better.
I am fairly certain the Denon you purchased was at a whole new retail level. But, I do have a good understanding of how a new unit blows an old one away.
Looking forward to my new RX-Z7 blowing my RX-V1400 away. Ya think?