Just a heads up...
The EPX isn't a very good ball. Alot of bowlers in my area have owned one and they absolutly hate it. It'll work good for a few weeks but starts to loose it reaction, and if you resurface it, polish it, or whatever, it just becomes your next great spare ball.
Alot of the bowlers have found great success with the Action. It's very consistant and is probably the better ball that Columbia has made.