The problem there is that if you choose an accurate sounding system, badly recorded stuff sounds even worse (one in the eye for those believers eh?). If you then choose a system to suit rough stuff then it's not normally well suited to good sounding stuff, although it's better that way round than the opposite I suppose. The other problem is that the more genres you listen to, the harder it is to get a system to suit.
I do find it weird sometimes that most bad sounding albums can sound hideous on some stuff, but you take an album like The Circus by Lenny Kravitz, which is deliberately distorted and lacking definition, but it's easy to listen to on almost any system!