When I first started handloading I used all RCBS, but for my recent rifles have switched to Hornady because I like the fact that I can easily adjust the bullet seating depth on the seater die with a twist of the finger without getting out tools to make that adjustment. I've tried redding, but I had bad luck with a specific die so gave up on them and stuck with Hornady, but love the rest of redding's products such as their presses.