I need to upgrade my ageing denon 3300. The toss-up is between the 3805 and the 2500. If I stick with denon, the reprogramming of my pronto should only require minor changes, whereas with the yamaha I would probably have to start from scratch. This in itself shouldn't be the main criteria for choosing, so I need your opinions on which to go for. Quality for music playback is not a consideration as I use a dedicated stereo arcam amp for that. Multiroom setup is a major requirement for me. What are the pros and cons of each receiver?