As I've said, the complete version of "It Club" does basically play like a "greatest hits- live!!!" set but that's arguably part of its appeal. I do know what you mean though and have mixed feelings about Monk constantly revisiting old tunes (especially during the Columbia period, where he would seldom write anything new). Recently relistened to his early Blue Note sessions (you've heard those right?) and it's shocking how many of his most highly regarded compositions are there. Really throws claims of the title "Genius of Modern Music" (which was given to the Blue Note sessions at the time of their initial release) being undeserved right out the ####ing window. That said, I do enjoy the Columbia period, even if it's not my favorite Monk (and I do generally agree re: Rouse but he's a beast on "It Club").
I wouldn't say I *dislike* Blakey but I've never really enjoyed his playing or his material very much, especially when you consider his reputation. His heavy hitting style is the antithesis of most jazz drumming and often sounds awkward and/or overdone to my ears (though some jazz drummers can be *too* light and airy so that they barely register- that's part of what I like about Roach, he's somewhere in the middle). Then there's the fact that his whole "take jazz back to the bluesy roots" philosophy, while a good one in theory, often resulted in fairly generic hard bop to my ears. Generally speaking, my enjoyment of Blakey's sets have everything to do with the featured musicians and little to do with the material or Blakey himself.