both paintballing and airsoft have their pros & cons, i used to airsoft quite a lot back in the day when i was younger, my and my bro ran a team that was sponsored by a Hong Kong retailer and a uk based tac gear company meaning cheap kit and guns.
At one point i had an ICS M4 RIS, Full Metal with aimpoint, 9.6v batts, TM MP5A5 solid stock and tac torch grip, M87 pump action cqb shotgun, WA Para ordanace pistol (full metal) as well as load of tac gear like black hawk down style delta force body armour.
anyways if you havent given it a go its worth a try, its great fun and a bit more mil sim based than paintball (mainly because the guns dont look like bits of drain pipe).
Have sold up all my kit now due to get old / team all going off to uni / VCR bill