There is not
The 2012 Exo Grid (BBCOR) is the only legal college exo bat.
Louisville Slugger and TPX
I have an exo grid and a Triton the exo grid has more pop but the Triton has a bigger sweet spot so u wont pop out as much with the Triton
exo
The White, White (Air), and Red seem to be the best 3.
the white exo is and has been the best exo that tpx has made so far. i have used all of them and i currently have the white one. it has much more pop than any of the other exo grids. that's the only difference.
The Triton isn't a bad bat, and it is $100 cheaper. The Exo is a better quality, and has more pop. I would Go with the Exo.
2010 air exo-grid
the louisville slugger exo-grid. its the best bat you can get because it has a special type of metal in between the bat head and the handle that strengthen it, creating maximum pop to increase your batting average, slugging percentage and your on base percentage. its the bat i have, but be careful bying it - its pretty pricy. you have to comit to this bat and polish it and clean it and make sure you want to play baseball more than any other sport and you can even give it a name! mine's name is rambo because the bat is so strong and can think of any possible way to do what he needs to do, just like rambo.
the 2011 tpx exogrid has already came out
For an eighth grader, it depends on your size. The best baseball bat for a middle school team would be an Exo. They have a light weight advantage and their sweet spots are enormous.
Nike Aero Fuse Cx2