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If it needs to be compliant with paintball, get full face paintball goggles. Full stop.

Look for JT's with thermal lenses and fan.

Proto EL switch or FS switch. With the EL buy a thermal lense with the FS it comes with.
For airsoft id suggest some ess with a fan Full face isnt reall needed for outdoor airsoft and if you want it get a mesh lowwer so you can still use your sights on your gun.

For all the above id still suggest a good antifog as even the thermal lenses or ess with fan will get fog or condensation at times so a good anti fog will help with that. Fogtech works well also there is this stuff that comes in a paste kind of form smear it on let dry buff off (cant recall the name paintball places have it tho.)
http://paintballgunmanuals.com/top-10-paintball-masks/
^^Handy link.^^

Thanks for the help!

Look at the JT stuff, used to run those for a bit, they worked quite well. Eventually upgraded to the Sly Profit mask, and never looked back those are my #1 recomendation to anybody willing to spend the 150$ on em...Dye makes some solid stuff too though. Though, for airsoft, i opt for the ballistic glasses (check out the revision bugeyes...think thats what their called) if your willing to leave your face unprotected (good tradeoff considering you wont be able to get a proper cheekweld with a mask)

Thats just my.02

And to build on Hectic's post, that paste stuff is called Catcrap. Sold in paintball sores and out here, Mark's Work Waerhouse has it too. You can usually find it anywhere that sells eye-pro in my experiences.

I use a JT FLEX8 and initially used the JT fan, you'll hear a hum the whole time (not to bad really) but at least it's got a switch and a battery will last a number of games however it's fairly cheap, wiring will break and the fan bearings will go and make it unusable. I ended up getting a small computer fan (20-25mm I think) and hard wiring it to a 9v battery, it destroys batteries after 4-5 hours and I didn't put in a switch in but it's effectively silent.

My goggles fog up terribly after like 15-20 minutes and at least for me no anti-fog or thermal lens would help, a fan was the only thing that resolves the problem completely, and it's kind of nice having cool air blow on your face. If you can you can get away with just running the fan for a minute or 2 when you start to fog up because it clears the issue pretty quick.

I love my dye i3. Never had a fogging issue and the i4 is even nicer.

i personally use the dye i4. Super expensive, but totally worth it imo. Looks cool, plus, has never ever fogged in the 3+ years i've had it.

I would have to agree with Pirate and Archangel. I used to run a Dye i4 for paintball, was the best investment i ever made.

My gf who wears glasses and hates contacts, bought one because it fits over her glasses. Great protection and great anti fogging lenses. I've played outdoors on VERY humid days with my mask and never had fogging issues.

Rather than fullface, I'd recommend goggles/glasses whatever on top, then a metal mesh mask on the bottom.
These mesh masks are awesome...for airsoft.
Paintball, never tried, but goodluck.

You'll taste paint for a week..