Difference Between A 2009 And 2010 Exogrid What Is The Best Senior League Bat For The '09 Season?

What is the best senior league bat for the '09 season? - difference between a 2009 and 2010 exogrid

That's what I'm looking for:
Louisville-2009 TPX Triton Baseball Bat -10 m. 299.99
Louisville 2009 Air Exogrid -8 Baseball Bat 329.99 M.
Nike-2009 Aero Fuse CX2 Baseball Bat -8 M. 299.99
Nike-2009 Aero CX2 -8 Senior League Baseball Bat 299.99
Nike-2009 Aero Fuse 3 -9 Senior League Baseball Bat 249.99
Louisville-2010 TPX Exogrid -8.5 Sr. League Baseball Bat 269.99
Louisville-2010 TPX H2 Baseball Bat -9 M. 249.99
Louisville-2010 TPX Triton Baseball Bat -10 m. 299.99

And finally, if you answer this question: What is the difference between all the bats of Nike?

Help to choose a bat, and why do you think is best.