Id go with the m3 personally. I have two of them and I’m selling one. Id stay with the fx m3 because it’s easy to change things compared to the panthera. The fx can change barrels easily and doing it on a panthera is a lot more difficult. The customization is also a lot better. I can go from a 500 barrel with a 300cc bottle and throw on a 700mm barrel and move. I haven’t purchased a panthera or dynamic.Really looking to know accuracy differences at 100yards? Is the m3 worth the extra money?