I just unboxed and hooked up my new Denon 5805mk2 two days ago and am flabergasted as the increase in video detail. I have a panny 42px600, dvd1920 (soon to be upgraded to 3930ci), Hughs hr10250, and all blue jeans HDMI. I replaced a Yamaha RXV2600 which I always thought looked and sounded great, and was expecting an audio upgrade (which was ample), but was shocked at the difference in video.
Even with everything set to through on the big guy, the difference in video noise, color saturation, and fringing was immediately apparent. Even my 11 yo step daughter noticed and commented on the difference. This was a direct swap out, nothing else changed.
I thought video on the 2600 was good, I was wrong. Just passing it along.
BTW. Before I get the "why spend $7000 on a receiver" bit, I got it free. I'm also using all 10 channels running Kef 201's up front tri amped, 202 center biamped and surrounds normal wired with 2 supercube 3's. All in all, it sounds pretty darn good. Looks pretty cool too.