If you can hit a 12" barrel well, the Demarini J2U is a tank and gets awesome hot. Good bat outta the wrapper and only gets better. It will differ from your U2 in thats its slightly endloaded and more flexy. Maybe not what your looking for but its what I think of when somebody says they want...
Little glue on the barrel helps the ball spin better.(not sure if this is legal) Think the slick barrel on them works against you some when cutting the ball. Why I like the bats with the rougher paint jobs.