[Captain Slow]

i know pintles and what other weapons can kill aircraft normally, im just asking for any suggestions tactics for killing them.
EG: one of mine is to take a 10 man devisator squad with X4 Heavy bolters and give them tank hunters, simply because of the sheer around of shots put by that squad im bound to hit it, and the tank hunters make even the bolters in the squad capable of penetrateing a flyers 10 10 10 armour.
and the reason i do that, because its cheaper than spending 26-40 pounds (thats between 50 and 80 $ ) for a model that im onyl going to use every so often.
see my point?