I am using harman kardon 8500 with proac hexa centre & rears, studio 150 fronts, rel stadium 2 sub, sky hd, sony bdp s760, pioneer pdp 507xd, chord rumour spk cables. My listening room is 7m x 4m sitting 3m from front& rear also very open plan with 2 similar size rooms via open arches T off. Overall the system is good maybe could be better in sound moving from front to rear. I realise some components are getting on in years. Any thoughts as to upgrading for example HK 8500, has anyone experienced similar set up using for example dspz7 lx83 etc,. I watch a lot of sky hd music also so has to be good with music as well as movies. Many thanks.