Like @Airhead says, it's trial and error unless you get into forums keep an eye on reviews when these things come out... Oldest isn't always best either, I rescued a couple of 45s from work the other day, Whole Lotta Love and I Can See Music... Led Zep was fucked but after a thorough clean it sounds pretty great now, the unplayed Beach Boys 45 sounds like it came off a 5th generation cassette... Both Aussie pressings from around that time... I'm currently listening to a first pressing of Third Eye by Redd Kross and it sounds bloody great!!
Like @Airhead says, it's trial and error unless you get into forums keep an eye on reviews when these things come out... Oldest isn't always best either, I rescued a couple of 45s from work the other day, Whole Lotta Love and I Can See Music... Led Zep was fucked but after a thorough clean it sounds pretty great now, the unplayed Beach Boys 45 sounds like it came off a 5th generation cassette... Both Aussie pressings from around that time... I'm currently listening to a first pressing of Third Eye by Redd Kross and it sounds bloody great!!