You'll find that both are popular, perhaps the two most popular here. Some folks place an emphasis on room correction, and choose the Denon for Audessey, which is reported to be a little better than Yamaha's YPAO. Yamaha is reported by many to have the edge on reliability. Both have decent power supplies and clean amps. Personally, I like the Yamahas from a value perspective. If I were to consider the Denon over the Yamaha, it would be in the AVR 4xxx price class, not the AVR 1xxx class, but others may have different opinions.