Had a G26 for some time and it has worked perfectly through a few thousand rounds. Of those listed it's the ONLY one I would trust my life to or recommend to others for the same. I would consider the Shield if it didn't have a manual safety. The LC9 has a mag disconnect, manual safety (on a DAO gun) and an internal key lock which I consider absolute deal breakers as far as defensive guns are concerned. I'm not crazy about the LCI either. Haven't seen enough reports on the Nano to say one way or another if it's good.
Any particular reason why you're not considering a Kahr or something beyond the four listed?
I don't collect guns, I accumulate them.