In general you want to avoid a lot of direct, steady wind as it can harm - almost burn - the plant.. on the other hand no wind isn't good either, as this means the o2 that's created by photosynthesis isn't moved away from the leaves, and no new co2 can get to the plant... that's why it's best to have a rotating fan, so that there's always some movement, but not constantly on it..
happy growing