Oh, the Dillon without a doubt!! I used to have a Square Deal and lost the little brass pins that retain the cartridge throughtout the process, during a move to my new house. I called Dillon and had them in 4 days, no charge. I've since sold the Square Deal and bought a RL550. I'd never buy another reloading press since this does it all and with any manufacturer's dies too! Dillon has better engineering, quality assurance, fit and finish, etc. Need more be said??