I don't do high volume reloads so I do it all manually. However, using the little hand primer pocket cleaner etc...just plain sucks so I picked this set up. Still manual but hand cranked. Comes with an inside chamfer, outside chamfer, lg/sm reamers, lg/sm cleaners & lg/sm pocket uniformers..not bad for $38
I have the motorized RCBS case prep center. One of the best tips I have heard is get a pair of spark plug pliers to hold the cases when using power case prep tools like trimmers. It keeps hand cramps to a minimum.