I have played Nuts, and I did nothing for me, it seemed that the whole game we were shooting at each other and not killing anything. The rules felt clunky to me.
I play Bolt Action now, although most army builds feel the same if your are not using the theater selectors in the army books.
I have also played Disposable Hero's which is better than Nuts IMO.
Bolt Action has the advantage right now since there is a lot of folks getting into it, so it is easy to get games in over Nuts or any other rules.