Hi there. I was running before Yamaha AS-500 with Wharfedale 10.4 and everything was fine until I turned up the volume to about 80% at new year party. (I know I shouldn't be doing that but I'm novice). The amp was getting quite hot which is obviously not good for him but nevermind that. One day I woke up and AS-500 broke down somehow so I phoned up Richer Sounds and got a full refund which is good because I was about to sell it anyway. At the moment I'm selling my Wharfedale 10.4 because I'm quite disappointed about the bass and treble especially when turned to about 50-60% max power. I came across Wharfedale Xarus5000 read some good reviews about those especially about bass and treble that they can handle the "abuse" from the amp. So I thing I will be going for those next week as I can get them for 149£. However I would like some advice on amp to get most out of those. I'm not audiophile the sound needs to be good not perfect with good bass for my parties and dance music I'm playing. Also I will be adding more speakers later so It must be able to handle at least 5.1 surround. My budget is around £400. There as the ones I was looking at: Yamaha RXV667 Pioneer VSX-920-K thanks for advice.