Been using a Midland G7 for 4 years, recently switched to the usual Baofeng UV5R, way more versatile
Comms are kinda mandatory in my team, especially when we do tournaments.
Baofengs are dirt cheap (I think I paid €21 for mine on eBay) and work relatively well. The sure do for the distances involved in airsoft.
Make sure you get a nice quality headset, I personally use a Midland MA-26LK shoulder mic (it has a Kenwood pin so it's compatible with Baofengs) with a small ear bud, lets me adjust the volume directly from the ptt in case I place the radio where I can't reach it, and it's €25 or something.
And yeah, Fuck VOX. That function is pure evil, especially when the guy using it (by mistake most of the times) is breathing like a pig or something. You don't want to listen to boars having sex while you're playing.