flexes look like crap, you get a hit and miss, some of them have the big wide ass bottems and some dont, also, they have no neck and lower ear protection. Grillz all the way IMO, the look sick, are breathable, and are just plain old comfy.
Couldn't agree more, Grillz are SICK in every way. Only downside I've ever found is that they fog in rain, cuz of how close the lens is to your face. Only competition they have are i4's.
I had to look through like 5 or 6 Proflex's before I found ones I would by. You can tell they're made in Mexico. After I found the best in the batch, they're really good though. Haven't gotten hit in the neck with them yet though, and I really don't wanna have to take them apart.