Me and tumblers have never had a good relationship. Over the years I have had 2 Frankford Arsenal and an RCBS to die on me. A couple years ago I bought the Lyman Turbo 2500 on sale at Midway. I have probably put more brass through it than all the other combined and she is still running strong ... Wish I could comment on the Hornady M2, but I have not used it .. when this one dies, I just might try it!! :lol: