I'd say Eric still. Granted, I like all kinds of country music, so I love 'em both. Lyrically, Eric Church has some really good stuff. Dierks' new album is pretty good.
On a slightly unrelated note, how do you feel about Brantley Gilbert? I love what he brings to the table. He has the balls to play his own stuff (for now at least), and I respect that. His sound is good, too.