I dunno. I've never seen a Coen Brothers movie I didn't like, even though I've only seen a couple.
On the other hand, I've seen most of Tarantino's work, and 80% of it are cinematic masterpieces...
But Death Proof was okay, From Dusk Till Dawn's only decent part is the opening, and I don't think I'll like four rooms
Tough call. Tarantino has Pulp Fiction which is tremendous. But that's basically it. The rest of his films kind of suck.
Coen Brothers have Barton Fink (which is terrific), Miller's Crossing and O' Brother, but the rest of their films are very average (with Burn After Reading just being straight-up awful).
I'll go the Coens because they have more than one good movie.