Koda pretty much nailed it.
As for fit to your, first hold with one hand and squire your grip quick with the other. How easy and consistent is that? How did the trigger finger line up?
With the gun in firing grip, is it easy to shift around with the other hand?
Raise the gun to a safe target spot on the wall. Are the sights aligned quick or do they "bounce" more than a comparable gun?
Last, with permission, pull the trigger while watching the sights. How do the move from gun to gun? Can you keep them aligned through the pull?
Last, renting for range time is best.