No, your right I havent. Typically when i hear 3 shit songs from a new album being played on the radio, i usually dont waste my money on the cd.
Death Magnetic is a really good CD all around, and one of the rare few thact actgually get s better every time you listen to it.
Seriously man, put it in your car and crank it, you will like it. The only complaint I can think of is the drums sound a little tinny in some songs, and I know it's because they didn't want to get hit with the overly produced criticism, but it could have had slightly more bass in the drum tracks.
Aside from that, Metallica and the new Slipknotn are also great songs for the gym
C