Looking for a CT grip for the wife's S&W 642 (No Lock!). The CT 105 is much less expensive than the 405, but the 105 is polymer and the 405 is rubber (I think). Anyone have either and an opinion on which one seems to function better in the hand. She has small hands and I want to keep this as a pocket conceal J-Frame so size is a factor. Wasn't sure if one fits these requirements better than the other. Thanks