Love the putter as the feedback is excellent and rolls true. Without the insert you know immediately of how well the contact was.

The Flowback 5.5 is nicely weighted and swings smoothly. The high MOI gets the ball rolling smoothly and tracking to target even on off center hits. So far, I've only played 3 rounds with it but it's getting better every round. 4 one putts from 4-9 feet for pars on holes 15,16, 17, & 18 last round and a 30+ footer for birdie earlier in the round means this putter has earned a home in my bag.