just ask yourself the suestion is this what i want..
if you're really happy woth the spound you get by EQ'ing, or compressing or even gating on tape.. do it,. it saves time..
if you're not, you'd better not.
why,. there's no way back.
that's why i usually just take of the low end for rumble..
i kinda live with the idea that the frequencies you get on tape can be filtered,. but you won't be able to get back the frequencies you filtered out on forehand.. (anyone else with the same opinion ?)
on the other hand, you've got different fingers