When I bought my 1050 dillon (used) it came with a posen drive. I fooled around with it a few times but never really liked it.Well my old man arm hurt the last time I reloaded with my dillon figured see if I can get the posen set up properly. Well I just finished running 500 38 specials. I'm impressed. I don't think it's much faster then cranking it by hand but it's no slower and my arms happy with it. I loaded swc and you still get the rocking some time of the tip, Of course the problem with that is the motor drive just crushs the brass when that happens but if you keep a close eye on it you just stop it and line the tip up and away you go. So I don't know what a drive is worth since it came with the press but I am impressed and my arms happy. Bill