For my rain team I am going to use Thundurus-T, but I don't know what would work better, Chioce Specs, or Nasty Plot. Specs eliminate the set-up turn, but only give half the boost, while locking me into a move, but nasty plot has to be set up, and I lose the boost when I switch out, but I am not locked into a move, and I get double the boost as I would from specs.