I currently have a low end Yamaha receiver (RX795a), and I have been intrigued by all the discussion concerning separates. I have been debating as to whether to upgrade my receiver with another higher end receiver, or to go the separates route. Do separates really offer a night and day difference compared to higher end receivers (eg. Denon 3802, Yamaha 3200)? I am not interested in listening to movies or music at extreme volumn levels, so does all that extra power that separates provide offer me any advantages?