I have tried several mounts over the years, including Gel, bean bag and flat rubber pads with a central hard disc for a sucker mount etc - but none have proved to be as steady, vibration free, non-slip and easy to deploy as the Garmin one. It folds almost flat and sits in the bottom of my suitcase without a problem. Vent mounts are not practical because some hire car vents will not accept them, and if the do, the heavy Garmin wobbles. The vents on my Niro will not accept a vent mount - and if they did, they would be in the wrong location.
If you guys are happy with your mounts - so be it - it's horses for courses. Mine's a winner.