I've seen both recommended in magazines, but also noted on this forum that some have had hissing problems with the Sony. Sony is lsited as £500 and the Denon £800, so it needs to be sigificantly better if I'm to go for the Denon. What do you think? Also, can you explain the difference between an Amp and a Receiver. Home Cinema Choice has this split whereas Home Entertainment calls them all Amps - I'm a little confused!