I'm trying to choose an AV receiver, around the £500 mark. I know little about them, my needs are simple: I want superb music, preferably surround sound and not just front (because it's easier to immerse myself in it, even if the purists would grit their teeth!), inputs from phono deck, CD player and computer / USB drives. I want sound from the TV through the system and I want to play MP4s and AVIs from the computer through the system and to the TV. When I try to read the reviews, I see are lots of detail of features and acronyms but very little about audio performance. And no-one reviews similarly priced models across the different marques, so there is no point of reference. I've spent weeks studying it all and I'm hardly the wiser. I did jump in and buy an Onkyo 636. In the higher frequency range the audio reproduction was superb, but the lower end was very poor, if not simply missing. The unit was faulty, the USB didn't work, so it got sent back. So, please, guys, how on earth to choose without taking a degree in acronyms and a doctorate in 'features'?