I have the Ferrari Colt (I've always wanted a Ferrari, but this one I could afford). I like it, but it is kind of tight on the cap if fully pressed down. It helps to use keg lube on the inside of the bell, but practice has given me the right touch. The height can be adjusted with one hand, and I have a Sharpie mark on the shaft for the three sizes of bottles I run across, so it's easy. I would not go back to the butterfly