I've been using this one for two years now and still holding up great. It's a clamp weighted type that sits on your dash and it does not move unless sudden breaking... Had used the window suction types but living in the tropics messes up the cup really quick.
i.Trek Beanbag Friction Dash Mount
No suction cups, no finicky vent mounts, no adhesives, it just sits on your dashboard and stays there. And it easily holds just about any phone imaginable in whatever orientation you want. Everyone in my family uses them now.