All I've got is In the Court of the Crimson King, but I love it, 20th Century Schizoid Man is one of my favorite prog songs. I've thought about getting Larks Tongue in Aspic, but haven't gotten around to it. As for the five most technically skilled drummers in rock, you've got a solid list, especially if you mean in terms of complexity. However, for some straight up, old fashioned drum-busting, I'm a large fan of Bonham and the Moon.
