Got these in a package deal with my marker and have been using them exclusively ever since. Have not found a need to use anything else. They are terrific.
I've used these goggles for over 3 years and have never had any problems with them.
Fogging is nonexistent. Even now, after all the wear and tear, scratches, etc. they only fog a little at the top during night games or really humid days, nothing to obscure vision, though. This is attributed to the dual lens system with inner thermal coated and outer lens sealed with foam in the middle.
These are pretty comfortable regardless if you wear glasses or not. They're great for those long scenario games. The foam is pretty thick and it will last forever (like I said, 3 years and still going).
The mask, goggles and visor are all detachable so if you feel the need to remove the visor or face protector (for you airsofters) you're set. Also makes for easy cleanup.
The only negative thing I have to say about them is they are a sweat-box. The foam absorbs sweat and they don't have very sufficient circulation for cooling. I sweat a lot anyway, so after a few hours it'll be to the point of having to squeeze out the excess from the foam like a sponge.
I wholly recommend these goggles. They are the first and best goggles I've used. I will continue to use them for paintball until they fall apart (which by the looks of it will be a long way down the road).