With regard to the quality of A2DP/SBC, I'm still not sold on it. I do wonder if this is because the Linux implementation is not optimal though (e.g. I can't see that it does variable bitpool size between frames, which is allowed for by the spec). It has some odd aural artifacts, some songs sound odd (they go faster and slower, only very slight but can be heard), I don't know where this problem stems from, but I'd like to fix it if I can work out how.