The earlier albums are more bluesy. Check out Rubber Soul, The Big Come Up and Thickfreakness. They are all excellent. They also put on a great live show. I've seen them 8 times and still can't believe that 2 guys could produce that much noise.
Danger Mouse produced "Attack And Release" and I really love what he did on it. It sounds less raw than their previous albums but I like that aspect of it. It's still pretty rough around the edges and what they did with musical space on it is awesome.
I think the songwriting is the best of any album. Early contender for album of the year, I think.