[C.G]

I just recently bought a pair of Dye Invision I3s Pro's after my JT's were lifted at a paintball feild. I loved the JT's found they fit comfortably and I had no issues with fogging. Dye turned out to be a great company, I might have bought one of the pairs that came off the line as a dud, they ended up not fogging but I had water droplettes coat the entire inside of the lense within the first half hour of game play. I wrote to them and they gave me a return number and I just literally got the new lenses in today, hopefully the problem will be corrected.
I found the mask itself to be very face forming and solid, using optics with them havent given me much of an issue (Though I've only played one game with the megga fog issue I havent had a full game opportunity to toy with optics with them and I usually dont rely or use scopes too much as is.)
They're very well ventalated too which sold me on them (After having a tooth shot out at a game I'm firm with the full face mask deal though used to go goggles only).
I'd say if you can get them for 50.00 and want to play with a full face mask, go for it, I paid twice as much + taxes for mine.