I hope to come up with my own opinion about RCBS 470 NE dies soon. I have dies from CH-4D that were very reasonably priced, but they have problems in resizing: The neck is left too large in diameter, so that the bullet slides loosely in the neck, and the mouth of the sizing die shears brass off my cases. I could try to chamfer or lap the opening to help with the latter, but would be left with the former problem. Today I spoke to RCBS and described my issues. They are selling me the sizing die for about the same price I got my other 3-die set for.