Vent mount, suction (dashboard/windshield), or adhesive — which is best?

Each trades off differently. Verified-purchase and Reddit commenters in our source pool favor vent mounts for cleanest sightlines and easy install, but warn they can block airflow and may not fit round vents. Suction-cup dashboard/windshield mounts hold the heaviest loads and offer the widest viewing position, but multiple Redditors flagged 'twist-to-lock' bases as failure-prone in heat. 3M adhesive pads are the most permanent and stable, but you give up portability.