Speaking as someone who masters for production, I can tell you that, broadly, everything said above is true. Essentially, it is all in the mastering, and there is no reliable way to tell if a given LP has been mastered appropriately for that medium. Proper LP mastering is distinctly different from CD mastering in nearly all cases. With LPs, there is no absolute 0 dBFS ceiling to compress up against, as well as a number of other aspects of LP production that require very different mastering considerations. (That’s why LP vs. CD "shootouts" of the "same" recording are, in nearly all cases, simply bogus.) But none of that means that the same, highly compressed, CD master can’t, with some exceptions or minor modifications, be cut to an LP. The LP in that case will likely sound like crap, quite possibly worse even than the "identical" CD, but there is no way for the buyer to know that in advance.
I work with both LPs and digital media a lot. As far as I’m concerned, except as an artifact and as still arguably the best archival media, LPs should otherwise be obsolete. There is no theoretical reason why Redbook CDs, respectfully and properly mastered, shouldn’t in all cases sound as good as or better than any LP. The fact that they often don’t speaks more to the irresistible temptation to abuse the remarkable power of digital technology than to some intrinsic sonic superiority of the LP.
In short, I’m sorry, but, as a consumer, there is no reliable and consistent answer to your question. Good luck and more’s the pity.
I work with both LPs and digital media a lot. As far as I’m concerned, except as an artifact and as still arguably the best archival media, LPs should otherwise be obsolete. There is no theoretical reason why Redbook CDs, respectfully and properly mastered, shouldn’t in all cases sound as good as or better than any LP. The fact that they often don’t speaks more to the irresistible temptation to abuse the remarkable power of digital technology than to some intrinsic sonic superiority of the LP.
In short, I’m sorry, but, as a consumer, there is no reliable and consistent answer to your question. Good luck and more’s the pity.