First of all, welcome to the board!
I would see if there is an indoor range nearby that has both handguns for rental use on their range. If you can shoot both of them before you make your decision, that would ensure you're getting what you want (and especially---NOT getting what you DON'T want.) Or find some local people that own both of them that will let you shoot them, so you can gain the same experience.
If this is not possible, try to hold them side-by-side and choose the one that feels thebest in your hand and points themost naturally for you.