I'm using an RCBS Rockchucker for rifle ammo and a Dillon 550B for 9mm, .38/357 and .45 ACP. The Dillon seats primers quite smoothly but it is a nuisance to switch out the primer feed.

Almost everyone has their knickers in a knot now that .45 ACP cases are available in both large and small primer sizes, necessitating a careful inspection when loading. If I could get enough small primed .45 ACP cases, I could switch between calibers without swapping out the primer feed.

Primer seating on the Rockchucker could be easier as the press does not produce sufficient leverage at the top of the stroke. I solved this problem with a Lee Autoprime which requires primer seating as a separate operation but it seats them so smoothly by seating at the top of the press but at the bottom for the stroke.