I'd definately have to give props to William Goldsmith and Joe Easley, both are very good.
I'd have to give my vote to John Stanier (Helmet, Tomahawk, Battles) or Jimmy Chamberlain (Smashing Pumpkins, Zwan, The Jimmy Chamberlain Complex) really.
Lance Carter (Maroon, Sonny Sharrock), Steve Shelley (Sonic Youth, Cat Power, Two Dollar Guitar), or Brit Walford (The Breeders, Slint, Squirrel Bait might factor in depending on the type of music.