I have just upgraded my Denon 3802 to a Pioneer VSX AX4AS-i. At first I was not sure that it was really worth upgrading as the Denon has such a great sound. After living with the Pioneer now for a few weeks I am very pleased with the money I spent. The VSX AX4AS-i is simply much more refined and the control over the sound is stronger in every respect to the Denon. The sound calabration options are endless and you can really tune a listening space to perfection. The bit I really like is the upscaling as I am still using lower quality source input, the amp makes everything just look so good, especially output to component. "I mean how can a £800 reciever be bettered then a what is now a £300 reciever." things cost less to make now, perhaps, but whatever, technology moves on and those small refinements make all the difference.