People treat the first pressing as the true one. It is usually just the earliest attempt, made by whoever was available that week, on whatever lacquer was in the room.
What changed my mind was a comparison I did by accident: two copies of the same album, one from 1974, one from a 2011 reissue cut from the same tapes. The reissue was cleaner. The original was better, but only on side two, and only in the last minute.
Three things, in order of how much they matter: who cut the lacquer, how much time they had, and how the plates were made. Everything else — the sleeve, the label, the colour of the vinyl — is a story collectors tell to make the search interesting.
Buy the copy you can afford, play it twice, and if the second play sounds worse than the first, it is not the pressing, it is you. That is usually the answer.