I've used both versions of the RCBS hand primer as well as the Hornady. I'm now using the Frankfurt Arsenal unit and like it better than anything I've used previously. You have to use their shell holders that come with the unit but they cover most cartridges. The only cartridge I load for that they don't have a shell holder for is the 450/400 NE, and maybe the 22 Hornet (can't remember).
