Hi! I agree with you- the works of the Grand Masters of Sci-Fi remain just as good reads as they were 30+ years ago. I read Heinlein, Anderson, Asimov, Norton, McAffrey, and many others. In fact, with my mom's passing in 2009 almost all the books she had came into my possession. I can remember reading just about every one of them.
I'm curious, have you read any of Stephen R. Donaldson's works?