My favorite Elvis period is 1968-1973. He was on top of his game in every aspect, music and health. He was pushing out great songs and it was just great. There is nothing better than the 1969 Recording Sessions. I love all of Elvis' music from the rest of the time (54-67 and 74-77), the ballads he recorded after 73 were great and had a lot of feeling in them and the early sun sessions is what got rock and roll started, but it is hard to argue against 68-69, when he was working on the comeback and he was recording and releasing great music.