i went paintballing once, but apprantly the FPS wasn't high. cause we were at winter retreat, the fps was prolly about 300. i think. it was pretty good even though the speed was "slow" we were able to see the paintball coming at you but not too much time to dodge. anyway, it was great and i think paintball is EXTREMELY fun, but i think make sure you know what fps youre playing with.
there are two types of paintball "fun"
you can play ultra high fps where i hear that people actually have bruises (like whon) for awhile. DO NOT play with marbalizers. that means that the paintballs are frozen and its like firing rocks at you. you get humongous bruises.
annnd seecond, it stings like nuts, but not enough to make you bend over and go ouch. lol. have fun.