Federal Gold Medal and 3" Federal steel shot hulls have worked well for me. They're a straight wall hull whereas AA's are compression formed hulls and are tapered. I mainly use the SAM 1 wad. Steel shot wads have no shock absorbancy to them and steel shot does not compress so everything's gotta fit just right. That's one of the reasons I like the Universal Charge Bar. I can slightly tweak a shot or powder charge to work perfectly with a given hull/load.
Not sure what kind of primer Kent uses but the primer pocket is too large to hold a new primer well when I tried reloading them and Winchester hulls collapse too easily when crimped. Remington hulls from my Hevi-shot shells have worked good but I don't have that many.
I'll be loading #2s from now on. I started out with #4s but hate their performance on ducks when they're not flying close. 2s work all the time.