Get one of the Innovation's. Make sure they can accept 12 gm unthreaded cartridges. Buy a box of 25 cartridges for $8 at Wally-World. The world will be spinning in greased grooves after that.

PS: Never "mount" the CO2 cartridge until ready to use. It'll slowly leak down on you and you'll wind up with a flat and no puff. I always carry the CO2 cartridge installed in an upside down position. And I carry a spare. And a mini pump..........just a belt and suspenders kinda guy.