A quick question for you guys running progressive presses: Dillon vs Hornady. I have a general idea of whats involved with changing calibers on the Dillon 550 and 650 (shell plate, tool head/dies). What are the average costs, with or without a seperate powder dispenser per caliber change? What is involved and what are costs for changing calibers on a Hornady LnL AP? Is a seperate powder dispenser indispensible? Basically, which press is cheaper to convert calibers, assuming I allready have the dies?