I am looking at getting a new receiver when I purchase my new DVD Player, and I was wondering if I would notice a difference between Denon's 1604 1804 and 2803 receivers? I would be using it only for home theater purposes (DVD Player, VCR, & DISH Network). My speakers are a hybrid Energy Take 5/5.2 with Energy sub. I am hoping to find a fairly close store to try and listen to them myself, but I was hoping to get an idea. Thanks.