It seems like your question isn't very specific(ish), perhaps you could also mention your requirements etc...
The following are all decent AV Amp/Receviers, depending on how much you are willing to spend, for what technology etc... For that reason, none can be called best. It really depends on best for 'what'?
Cambridge Azur 540R v.2
Yamaha RX-V757 A bargain if you can find one .
If you don't need HDMI switching or one or two of the other recent technological features I would definately go over to the classifieds and go after the Denon AVC-A1SR (rrp £3000 3 or so years ago). I think the initial asking price is £900 but I would be surprised if it went for more than £700.
I recently picked up a similar ex-flagship integrated amp and the performance is on a completely different level to for example the current Denon 3806 (rrp £1000) I listened to recently