Now that I've gotten about a week of practice with my medium Ions I must say that they are the nicest putter I've ever used. They are so straight on approaches/drives that they make the softs seem touchy. The mediums also drop much straighter. They do not need as much snap to fly straight either, which makes them more accurate for me. For putting they come out of my hand cleaner and show more consistent flight behavior than anything I've thrown. I like popping them up with the slightest bit of hyzer and watching them smoothly drop in the chains. They even seem to get better action off the chains as they do not have the very late low speed fade of the softs...or perhaps its just because they don't need as much spin to fly straight. I'm not really a spin putter, so there are much more natural to me than the softs. Compared to the Voodoos I was using, the medium Ion flies smoother, is a touch faster, and glides a little better. The medium Ion is also much better in the wind for me than either the Voodoo or the soft Ion. This has a lot to do with the cleanliness of my release I'm sure as with the Voodoo/soft Ion I often had a touch of OAT on my putt.