I played paintball back when I was 15-16 and quickly got into airsoft because of the cost - the only thing that kills your enjoyment for paintball is having to shell out at least £30 a weekend in paintballs! With airsoft it's about £6 for the same amount of ammo.
Either way it's seriously fun, the initial cost can be a bit expensive but when you consider it's usually only about £20 for an entire day it's a lot of fun. Cheaper than running a car at track days at least.
Also those guns you just posted are both Tippmann 98s with mods on them, same gun I used to have. I went with one because they look pretty damn cool but they are pretty heavy and not as maneuverable as the smaller guns. But they are pretty cheap to pick up... If there's anything you wanna know feel free to hit us up mate