Bodkins are best choice IMO if you have gold for upkeep. With Long bow not many ppl will survive headshot.
Many ppl are saying that tatars are better against light armor guys, but still, you will hardly ever oneshot someone by body shots, and you will be forced to shoot him again to kill.
Plenty of ppl have already +3 armors and gloves so they have decent amount of body armor, so bodkins will hurt them a lot
Best arrows for looming are bodkins. Difference between 0 and +3 is huge in amount of them. I have +3 bodkins and if you are not spamming like a crazy with them, 2 quivers of them are enought for a round.