definitely the 552. AA batteries will always be able to be found and I like the NV option, obviously!
I figure if it is fun to start with, I'll learn to use it well enough to rely on it when something serious comes along. I can't have fun with my Krag, that sucker knocks me back too far for a second shot (which I won't need if there is only one target.) The AR carbine (when it gets here and pimped out) or the AK (when it gets built) will be my go to guns right after the wheelgun. Given the givens, it looks like a light and red dot for starters as coin allows. εατ µσρε Π
as far as lights I have SUPER impressed with the Inova stuff!!! Very tough, and will blind anyone in a room you hit with it.