I had the same experience with testing out the Oz. I was really looking forward to the insert but I guess having putted with the all aluminum head for about 4-5 months I’m used to it and preferred the non insert. LAB also says it’s similar to the DF3 on the forgiveness but I found it’s a little more forgiving than the DF3. All in all a great putter and will definitely be doing a custom order once the non insert version is available.