I am using Denon AVR 1509 in my home theater system. It is a 5 channel amplifier with a great sound quality. I am really impressed with the functioning and features of it. Now there is Denon AVR 2309 in the market. I want some information on its performance and features. What new it has in it. The price difference between both amps. And basically it means by it name that it must be much more stronger than what I have, but before coming to any conclusion I want to know about this. Is anyone using it then tell me about your experience.