The M1 is more difficult to turn, when compared to the CDS.
An easy test is to take the heel of one's hand, and strike the turret with a glancing blow in the direction it turns. M1s don't move without a fairl hard hit. The exposed Nightforce turrets are similar or even more difficult. SWFA SS scopes, same story. A Leupold M3 doesn't turn at all (it's hard to turn, even when gripping it). The CDS moves with very little pressure, essentially taking the same amount of pressure as a Leupold Target Turret. The advantage the Target Turret has is it's cap.
I'm a huge fan of capped turrets on any rifle that will see real use.
