More than likely, whichever ball you choose, from whichever company, you're going to see a definite change in your game. I'm assuming you've had your TKO for a while, and have quite a few games on it. You're probably seeing a smooth arc, and depending on the lane conditions, a fairly small angle of entry, relatively speaking. Assuming you're going to be going with something of at least moderate strength, you will probably have to move a few boards inside, even on the new lane conditions. The Psycho from Hammer would be an excellent choice, it's a very versatile ball, not the biggest hooking by any means, but more than enough hook to get the job done on a league shot. It will also keep you from having to make too drastic of a change since it doesn't have a huge backend, but again, plenty to create good pin carry. Good luck to you.