For strong side carry I like, in order
Black arch (smaller overall size)
Comp-tac
JX Tactical
Werx
Vedder

I listed the Vedder holster last because the whole back of the holster is leather and depends a lot on your body helping to keep the gun in the holster. BUT overall they are quite comfortable and secure enough.

Now that I almost 100% of the time Appendix carry I Very Much prefer the TT Gunleather holsters and then the JX Tactical (Fat Guy) holster as it rides very low in the belt line. It is actually lower riding than the TTholster, but the leather is more comfortable.