I have never reloaded in my life. After careful study and due diligence I bought the 650, because I shoot 2000-3000 rounds a month minimum.
Growing pains were horrible until a friend (with a 550) came over and checked my setup.
He taught me minor tips that had a major impact.
Now I reload 9mm and .45 ACP like a rocket.
Love my 650.
Glad I went the way I did.