Looking to replace an old Yamaha Prologic receiver and go digital. I've narrowed the choice down to the main players in the: Sony1080 Sony 555 Yamaha 640 Pioneer 2011 Marantz 4300 (Although the hissing/buzzing issue is putting me off) Denon 3803 - I'm told musically it's not great though I have floorstanding Rogers speakers which are quite natural sounding but would possibly like a bit more of an energetic sound than I currently get. I'd also like a receiver that performs well with 2 Ch Audio. The problem is I can't audition all of these in the same location. Does anyone have any recomendations or suggestions, possibly something I have overlooked? Also as I have a smallish room is it worth the extra going from a £400ish to £600-£700 amp? as I could really do with a new DVD as well.