I have the DSPAX1 and still think that the performance is pretty darn good! However, upgrade fever bekons and I know that the Yamaha does not have the newest features (prologic II, dts 6.1 discrete, dts 96/24 etc.) I am tempted by the new Pioneer VSX2011 THX receiver - which has the newer formats. My question is, sound quality wise, will an £800 receiver nowadays give me better sound quality than the £2000, three year old DSPAX1? Any thoughts? Cheers.