I can't think of any picture disc which sounds even close to as good as its black vinyl counterpart (where a black vinyl version is available). My least favourite being the one for 'Lateralus' by Tool: such a great album and such a sucky sounding vinyl release (the picture disc one being the only official vinyl available). Coloured vinyl is a different matter and I have some really great sounding ones of those (though some bad ones, too). 'Betty's Blends' by the Chris Robinson Brotherhood is a really nice one, both in terms of sound and appearance.