Good CDs?

I'm in Edinburgh for the festival (or rather, the International Festival, two book festivals, end of the Jazz Festival and of course the enormous Festival Fringe), and Edinburgh has two really incredible bookshops - a store that specialises in classical music, and a poorly-lit place lined with cheap and second-hand CDs that represent every genre and subgenre from obscure '70s jazz fusion to even more obscure classical composers such as Stravinsky. So I plan to do what I do every year when I'm here and stock up on great finds. Already I've bought all Bartók's string quartets on EMI for £10.

Point: Any other good recommendation?