I would say jt flex they are light,nice fit and they are VERY customizable. If your going for looks go for the events in white. I have also heard vforce grills are very good on vision. But really each to there own.
Yep Vforce are really quality lenses, (from my experience.) I've used JT nVader, Vforce basic mask, and Dye, (currently have two Dye I3's.)
The Dye masks are very comfortable, look really cool, and can be easily customised with the use of interchangeable parts. I've only used a cheap basic Vforce mask but the clarity of the lense was fantastic, and I've heard good things about the more expensive better quality Vforce masks. In fact my next mask will probably be a Vforce grill.
(Great vision, and cool looking mask with a Jester like grin effect.....can't lose)
Ultimately though its up to you. Whatever feels right for you, so get yourself down to your local paintball store and try some masks on and make a decision