I have been faithful Yamaha buyer for almost 30 years. The last two reveivers I bought had issues within the first 3 years. One volume knob failed which I was able to fix by following a Youtube video but that should not have happened so soon. More disappointing was my RX-V765 ended up with untollerable white noise in one of the surround channels. Quote was $300 to fix so I opted to move it upstairs to my 5.1 setup where I did not need that channel. I had the 765 in a 7.2 setup. KEF in wall fronts and center with Niles audio surrounds and a Klipch sub. System sounded very good but for what I spent in speakers, cables (Blue Jeans 10 gauge) and time installing it, it just seemed to be missing the mark.
Bought the 50.4 after hours of research and visiting several higher end stores. Granted that I went from 95w to 135w but the Integra blew the Yamaha away. My wife was very skeptical that she would notice a differnce but when we watched just regular TV that was broadcast in 5.1 all she could say was "Wow!" The Audessy setup took about 30 minuted and I have had pure listening and viewing pleasure ever since.
The system is used for 40% tv, 40% movies and 20% music. I love having Pandora right in the receiver for gatherings or a workout.
I would tell anyone looking for an AV receiver to strongly consider Integra.