Thanks for the question. With regards to the MOI, if your impact point is a bit inconsistent, you want the highest MOI that you can get. The PTM-1 blade is a high MOI for that style, but is significantly less than the X-Tour. You should notice the difference on mishits between the two, the difference being how far the ball rolls when struck off center. If your contact point is consistently in the center of the putter, then the MOI matters less. As far as the insert goes in the Odyssey #2, I have not tested, but you know what your feeling and seeing. The PTM-1 and the X-Tour do not have inserts and the only thing that would effect the roll on off center hits is the MOI. There are no different materials in the faces of these two putters. I do think the feel of the putter, both the contact feel and the overall balance of the putter is very important. The contact feel on both the PTM-1 and the X-Tour are great, in my opinion. the PTM-1 is a S25C Carbon steel and the X-Tour is a high grade 6061-T6 aluminum, both of which are great materials for putters. The head weights are heavier, which is something we have been doing for a while, which allows for a variety of build options to find that “balance” that works for you. Whether you counter balance or not, the heavier heads, in our testing and experience, are easier to stroke consistently. Finally, you have to like what you looking at with regards to the style (shape), and the alignment aids. Some like simple like the single line on the PTM-1, while others want more when it comes to alignment lines. The “ball in motion” on the X-Tour make it incredibly simple to line up.
Hope this helps. If you’re like me, you going to have more than one putter. You may have to try a few to find the right combination of features that give you the confidence you need to make more putts.