I've recently purchased five CCR studio LPs. I only wasn't able to find "Willy and the Poor Boys" and "Mardi Gras". On listening to those LPs, one thing jump at me -- some LPs deliver incredibly high quality sound, while some are quite the opposite, with murky, dull and wimpy sound. The best sounding of those 5 LPs is "Bayou Country". That record just bites, it has incredible presence and is an enormous pleasure to listen to. One of the absolute best sounding LPs in my collection. Next to that record in terms of sound quality is their first LP (the eponymous "Creedence Clearwater Revival"). Also very lively sounding, with a lot of bite and presence, but not as brilliant as "Bayou Country". At the other end of the sonic spectrum is "Pendulum". Such weak, wimpy sounding LP. It's really heartbreaking. "Cosmo's Factory" isn't much better, to be honest; neither is "Green River". Dull, murky overall sound, feels like someone had stuffed cotton pads into my ears. So my question is: did I get bad pressings of these LPs, or were those albums in general recorded/mixed/mastered in such a wimpy way, while "Bayou Country" was prepared in a much better way, sonically speaking?