After a trip to the Bristol Sound and Vision show yesterday I have a case of upgrade-itis and am playing around with ideas. I like the sound of my system and its mostly used for movies but often gets music (either audio or DVD / Blu-ray) playing through it. I've had a few thoughts on how I could further improve its musicality and I recognise that I would need to spend a number of thousands for a significant upgrade so would have to do some saving. I'm unsure where I would get most bang for my buck? What would you do first? Media : FLAC/Apple Lossless CD rips stored on Windows Home Server 2011 Source : Sonos ZP90 Interconnect : Optical cable Processor : Audiolab 8200AP Power Amp : Rotel RMB-1075 Speaker cable : 2.5mm Van Damme Blue Speakers : Dali Ikon 6 (actually the 5.1 package) Sonos upgrade? Level 3? www.fidelityaudio.co.uk/Sonos.html Power Amp upgrade? http://www.avforums.com/forums/ampl...y-ab-cinema-6500se-3800-power-amplifiers.html Speaker upgrade? http://www.avland.co.uk/aasp/dali/1220/epicon2/epicon2.asp Was really tempted by these too: http://www.avforums.com/forums/spea...dali-helicon-800-speakers-7k-new-reduced.html Additional DAC? Was thinking of the Audiolab M-DAC? Something else?