Best of Bread, on vinyl is a super recording, and some really nice music, for soft pop. I was amazed at how good that album was recorded, for way back then. Image and clarity of voice and guitar is very good, and soundstage is well outside both speaker boundaries, for the accompaniment instruments.
Also, I agree with Madonna "Immaculate Collection". That has some awesome soundstage and imaging on it. It is pretty hard to get on vinyl, but it's worth it if you can find it. The CD version is easily available.
Neil Young "Decade" triple album set is a very good and large "best of" album. If you have only one Neil Young album, that should be the one.
Best of the 5th Dimension, is worth having. Marilyn McCoo has a heavenly voice, and "Wedding Bell Blues" along with "Aquarius/Let the Sunshine In, are must haves.
Best of the Association, is a classic for the baby boomers.