I need to upgrade my ageing home cinema system. I'm currently using Pioneer DV575A, Cyrus amp to run the front speakers and Yamaha DSP E800 to run the centre, rears and output to the sub. This system allows me to play my DVD audio and SACD 5.1 collection. What Blu-ray and multi channel amp would be a suitable replacement. I was thinking along the lines of Sony BDP550 and Denon AVR1910. Would this still allow me DVD audio/SACD functions and what style speaker system would you recommend(my wife says the current Tannoy MX's are too big). I may be able to get Tannoy Arena Lites for about £250?. Any help would be greatly appreciated.