I've always found W209s most versatile at the low end for pressure (more data) but I like the STS primers for the minor reason that they seem to drop into the index plate on MEC 9000G more consistently than W209s which have to be watched for flipping, canting in the plate and skating past the well, etc. I may get a lecture on deburring/adjusting drop tube but that is just my experience. With Winchester and Remington around 32$ the thousand, I'm interested in those Cheddites. I believe the extended MEC primer tray will handle 2 sleeves of primers (200) rather than 2000. I hope so as 200 is more than enuf a foot from your face.

jack