Boston, MA
TWD Pro and don't look back. You like the game already, and they finally did something great with the code. Plus you enjoy a challenging game, and TWD is always trying to take the ball back.
Walker Bombs... A very interesting concept only available in the Prem / LE games. But they can be used as a bit of a crutch. And again, if you like the challenge of a tougher game, you won't need them.
As of now KISS isn't ready for prime time. So wait a bit to see if they can do something good with it.
So that means 1 Pro and save the rest until another game breaks through. I'd have suggested MET, but you have that covered 
