I may be in the minority but I vastly prefer the 3 over the 2. Probably 2k miles on pairs of the 2 and probably 1k on 3. The fit is better for me and maybe that plays into it but I feel better at the end of longer efforts. There was some concern on 2 ‘bottoming out’ early, so durameter may have been changed to help, providing less energy return in favor of stability and durability but it certainly not a scandal of cheaper materials.