Went for another ride today and started noticing more differences using an air shock. The stability of the bicycle is better, especially going down hill, on rough pavement and attempting to make a turn. To test this I found a low traffic road, down hill, that has rumble strips. Going over rumble strips at 20 mph was somewhat exiting in the past, now the Quest is more behaved and stable. I am running 150 psi in the shock which is the maximum recommended pressure. The comfort level is better, even though the shock only moves 1-2 mm.