Not all record pressings and created equal. Many new reissues sound worse then original first pressings. That's why I tend to hunt for original pressings. Many new pressings have been digitally remastered at some point. As for Simon and Garfunkel my original pressing sounds alright but it wasn't till Paul Simon went solo that the quality of recordings was really considered. Pick up a clean original pressing of Paul Simon's Greatest Hits the quality is superb. Good luck and keep hunting!