Picking up a new caliber soon and was thinking about switching brands of dies. Usually I would always use the Redding Type S Full length size die with the Competition seater. Really never had a problem with the Reddings, just wondering if the squeeze is worth the juice in some of the higher end dies like the Whidden, SAC or the LE Wilson dies or better yet, have a set of Newlon custom cut when I get the new barrel spun up. Has anyone done the upgrade and can say that X die definitely makes better ammo then Y dies. I understand some dies can produce better concentricity, but has any ever really tested that it does really produce better accuracy?. And FWIW, I have separated out the decapping and expanding out into it's own steps. A little more work but I like that control more.