Greg, I think your runout has far more to do with the press & die setup than the dies themselves. I bet I could take any of the dies that you have there and reduce the seated bullet runout to near zero. The fact that all the dies have similar runout confirms, in my mind at least, that you do not have a die problem. Also, the differences in runout between the dies is not statistically signficant, based on the sample size shown in your picture. Translation, they all seem to work about the same.
Also, keep in mind it's a cumulative process. So, brass with .0025 runout is going to show up as seated bullets with similar or greater runout. Personally, I find the better commercial seaters to all be capable of seating bullets perfectly. I did a test years back with hundreds each seated on a Forster, Redding, Wilson inline. There was no difference in their ability to seat bullets well.
Sizing dies are where I find big differences in the end result. If you want to learn more, measure the runout on your fired brass, then on sized cases, then on seated bullets. If you see things improving at each step, then you have a good setup. Major areas to focus on are quality of the sizing die, your die/press setup.....that's the big one for the seaters. Now, a Wilson works well by default because it is a press-free setup. But that does not mean you can't get a Redding or Forster to work just as well.....float the die.
Are you testing on new brass? New brass is not going to be very straight, but it will be after 2 firings, assuming your chamber is straight. Best to test your seater when starting with brass that has minimal runout.
