i know sour, they are a 1 hit wonder, unless equipped with melta's, then i have 2 mobile tank hunting units.
adept, i know tau weaponary
and i know they do have problems with tank in higher point games.
but things like krootox can also damage them, rail rifles can hurt the slightly weaker ones too.
but sniper drones would take up a heavy, which will be only for hammers and broads.
but i can also take piranahs with fusion's, they will be alot better for tank hunting, the melta rule, mixed with thier speed should work well.
ill make my army decision soon.