its all personal preferance yadda yadda
but IMO i would go with the proflex, you can get them cheaper than the others, i dont like the look of grillz and i just dont like the feel of events. And you can make the proflex's look as "agg" if not "agger" than the others if thats what your looking for
Ive got a pair of proflex and a pair of I3's and id say both are awsome, ive got a few bounces of both, i personally prefer the ft of the I3's but you can pimp the proflex to the nth degree
in that case proflex it is
if you get hit in the soft bit i find that it will bounce more often than it will break. I have seen many more bounces off proflexes than i have off any other goggle.
vents are awsome seriously you wont regret them, they dont fog are featherweight light and look the shiz, and i have to say i havent used them all that much but from my own personal use just as long as it the paintball doesnt hit you lense it'll bounce.