I currently own two 6-284, One 12 twist and one 9 twist. I own two 6-WSM, one kreiger 8 twist and one Bartlein 9 twist and one 6.5 WSM with a Kreiger 9 twist. My vote goes to the 6-284. It uses less powder to get the same results, 6.5-284 cases are available from Norma and easy to neck down. I...