Well, I think I have had them all. I really can't complain much with my RCBS as far as runout as long as I take special percaustions. I tried Lee, and that was hit or miss. Now only ones I use of lees is the collet dies. They seem to work well for me.

But recently, I have been on this runout kick. So I purchased seaters by Redding. They are pricey but seat bullets more precise than any I have ever seen. Runout problems started disappearing. They appear to me to be very nice precise dies. If you can afford them.