Dertonearm and Raul, I have a suggestion for both of you that you will find very useful if you are not doing or have not done this already:
I'm all for advancing the art. One of the most useful things I have done that has helped me immensely is to have been involved with the recording of LPs, from start to finish. By that I mean refurbish a recorder to do the very best it can, get your hands on a set of the best mics possible (barring that get a set of the same type used in recordings you are familiar with), set up and produce a recording, engineer the whole thing such that you have an LP that really does have good sound that can be compared to the master tape that played back on the master tape machine.
Once having done that you will find it a lot easier to separate the wheat from the chaff!
I'm all for advancing the art. One of the most useful things I have done that has helped me immensely is to have been involved with the recording of LPs, from start to finish. By that I mean refurbish a recorder to do the very best it can, get your hands on a set of the best mics possible (barring that get a set of the same type used in recordings you are familiar with), set up and produce a recording, engineer the whole thing such that you have an LP that really does have good sound that can be compared to the master tape that played back on the master tape machine.
Once having done that you will find it a lot easier to separate the wheat from the chaff!