I've been hit in the neck, the back of the head, near the groin, and in the sensitive parts of the wrist. Cold weather is best, you will be sweating your balls off and wanting to take your clothes off when you're done. AJ will for other obvious reasons
This isn't too bad for paintball. it's expensive here because of the playing environment. I've spoken to people who do this for the realism, and this is one of the best in the area.