I think the elite version is the way to go because the regulator is externally adjustable. I saw a demonstration where the magazines hold larger ammo than the pro because the elite version is much beefier. Terry Fox did a demonstration shooting 10 shots or I think two whole magazines with the regulator turned up to 210 bar. The magazines can also accept slugs that are 50% longer and heavier so if I ever have to do this again I would go with the pro version but make sure it's the elite pro
