I have a TenPoint with the ACU 50 (rope pull) and I like it because it's quiet and reduces draw weight by 50%.
However, mine has had a tendency to get out of alignment and one of the two ropes will not completely retract. This is a pain when you're in the woods, because it's noisy when dangling around. It can be fixed by removing the cover and adjusting it, but I'm not always carrying a spare screw driver in the woods.

I'm not happy that after paying extra for that feature it doesn't consistently work. I'm considering upgrading to the crank system.
I'm curious to know if the TenPoint ACU crank system makes noise while cranking? Anybody know?