I like Convertibles and have several. More in 45LC/45ACP than 357/9mm. Often this depends on the pistol. You may find one that is better with 357 and another with 9mm. Even then what I have found is the groups are close at say 25 yards. There is not a huge, massive difference in group size. I guess if you have 0 interest in shooting 9mm through it, then why pay the extra price.