Gumby,
I was unfortunate enough to attend a concert described as a 'Drum Battle' between Ginger Baker and Elvin Jones, in the late 60's I believe. It was a shambles musically and though Baker was a nifty drummer, Elvin Jones played circles around him. Jazz musicians are invariably much more skilful than *most* of their rock counterparts.
Some great rock drummers : John Marshall, as focused and powerful a drummer as I have ever heard - listen to his offerings with 'Soft Machine". Jon Hiseman, Denis Elliot, who cut his first album at 17 with the superb Jazz/Rock band 'IF' much to everybody's amazement, Franz Di Cioccio outstanding drummer with Italian progressive rock band PFM, and the very underrated Richard Coughlan drummer with Caravan.
Some great jazz drummers, Elvin Jones - nuff said, Ed Blackwell - nuff said, Trevor Tompkins - one of the most 'melodic' drummers I have heard, Doug Sides, magic in sticks, he phenomenal Tony Oxley, and of course the gentleman of Jazz drummers Joe Morello who is still drumming after all these years.
I am not terribly keen on 'show drummers' like Buddy Rich, Billy Cobham and even Jack DeJohnette who very often forget that they are part of a band, though they admittedly raise Cain when seen live.
HS