My personal favorite is the UK version of Aftermath - that sweet spot in 1966 where rock was beginning to get colorful but not quite fully psychedelic (a few important cases aside). UK version (the original) had some different awesome songs than the US version, and was one of the 1st rock albums to stretch the LP run-time beyond 50 minutes, with extended-length songs, one of which reaches 11 minutes. The US version is great too, but I miss the removed songs, and the run-time is shorter. If I had to choose their overall best, I'd go with Exile on Main St.