Azodin Zenith, Blitz or Kaos?

Me and my friends are all buying paintball guns and my budget it at max 300 which would be the Zenith. An I am wondering if the zenith is worth 150 dollars more from the kaos and 50 more than the blitz. Like is the extra money going to pay off? Am I getting 'more bang for my buck' please help because I am kind of nervous about spending 300 but if its worth it i will. Or should I go with the Blitz or the Kaos? thanks for the help i really need it