I also have a nice collection from the 70's. Some of them still sound good, others don't. But even some of the new albums I bought, even the 180 gm ones often have sound issues with clicks pops etc. I have a very nice Nessie record cleaning machine that helps, but...
My current setup is a Music Hall 5.1 with upgraded acrylic platter, a Grado MC Sonata cartridge mated to a Musical Surroundings cream, and it sounds darn good on a good amp/speaker setup. But I just heard a new Project X2B balanced system and it takes it up another level! I may upgrade to that upstairs and move my Music Hall downstairs.