I use a lot of Lee dies.I like them,especially the seater die set up.The newer Lee dies have a better lock ring than the older one.I liked the older RCBS dies.They also had better lock rings too.RCBS lost me when they put those cheap ase brass set screws on their lock rings.Also the expander stems seem to bend.Comparing runout between those two dies,I can't say one is better than the other.I have one set of Redding dies.They are a step above the other two and I like them the best.

~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............