Limit is 3 on the Rush. 12" minimum for browns, 8" minimum for brookies. I always say I'll keep a couple, but I never do. Keep the trout regulations handy. Almost seems like every stream in Wisconsin has different limits and slots.
I would buy a box of both, and go pattern each. Both will kill a bird. Neither of them may pattern the same. And not every gun will shoot the same.
Shoot some of each at 20, 30 40 yards etc and then shoot what your most confident with.
To this point there has been some sort of connection between each season. This season was the "deaf" guy which connected to Season 1. Last season it was the little girl who I believe was the young child version of the female cop in Season 1.