I always said I would NEVER use one. I thought it would be noisy, have too much drag on my arrows, mess up my vanes and wear out easily. I WAS WRONG!
My new Bowtech came with a new WD QS with the drop in rest instead of the push through and I love it. Its quiet, keeps my arrow from ever falling off the rest, doesnt hurt my vanes and seems really durable so far.

Id recommend it.