So I am a level 77 storm and I was wondering what the best gear for attack and critical would be because right now I am using the ww gear but I don't feel like it's enough
Though i am a bit new to the game, I would suggest crafted gear. Usually it is the most effective stat wise excluding Waterworks gear and Hades gear (but you can't get hades at your lvl...). So ya... I would suggest the crafted gear.
I, personally, have been using Waterworks gear on my storm since level 60. The crafted gear from Avalon is okay, however I still believe that Waterworks is the best you can get until the defensive Tartarus gear.