I know this question has been asked many times before (It feels like i've read all the posts !!). I have around £250 to spend on an AV amp (could probably afford a bit more if pushed) & am going round in circles choosing one. The favourites at the moment seem to be; Marantz SR4400 Yamaha DSP-AX640SE Cambridge Audio Azur 540 It needs to be good musically as well as in surround (which the Marantz seems to be) but i'd also like A/B speaker switching so I can add a pair of speakers to another room at a later date (which I don't think the Marantz can do). Can anyone help (maybe even recommend another amp that I haven't mentioned above). Thanks.