I did that with my wife back when she was looking for a handgun. After visits at Wilshire and H&H, I was out over $200 in rental prices. She picked out the one she was most comfortable with which was the Sig P-938, so I bought it. Cost me another $50 to replace the grips after an extended shooting period at our range whereupon she determined the grip was too fat. Turns out her favorite gun is my Kimber 1911 in ..45acp, but she ain't getting that one. She did use it to get her CC license though.that's what i carry. but really, OP, you should take some of the most popular concealed firearms from Glock, SW, Sig Sauers, Ruger and go down to the local range and rent 'em and see which one is more your fancy. As long as you get it from a major brand, the reliability is fairly comparable and it mostly comes down to preference as far as i know.
Personally, Sig Sauer p365 is a great little pistol for me.
^^THIS^^The mission drives the gear, decide what your mission parameters are and choose the pistol that best meets those parameters