Bullet ants by far, I use bullet ants, my mate uses v12's. I love mine, he hates his. Bullet ants are comfier and lower profile and less fiddly than the v12's.
What's fiddly on v12s? I've got two sets and there's nothing to fiddle With? That's said get the revisions unless you can get the ESS set cheap.
not had any luck with my bullet ants they fogged up within 20 seconds at my first skirmish which led me to wasting 15 pounds on a pair of mesh
well I can get both sets for 30 quid each so price isn't any difference its just what are more comfortable etc that matters to me