I like versatile weapons, which allow either 1-hand + shield or two-handed use. I think there is a breakpoint somewhere around AC 22 or so, where once you get above that, you become extremely hard to hit by most enemies. Equipping a +1 shield can push you over that edge. But, sometimes you just need lots of damage and AC does not matter so much.
As far as stormy weapons go, keep playing, it sounds like you haven't hit the jackpot yet!