The Lee collet neck sizing dies are the best thing you will ever buy as a reloader. Perfect concentricity is only a Lee collet die away. Now all that Lee needs to do is make a body die like the Redding. These two dies do everything you will need. I shoot f-open, f standard and H/S class and 100% of my winning ammo is loaded with this combination in a Lee hand press. Love my Lee gear, hate the haters, and show them up regularly. Lol