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Judge Dred (Fred)As far as storage goes you can cram more PSA slabs into a box than SGC and you can cram more SGC slabs into a box than you can BVG slabs. As for the important criteria, I think BVG does a decent job (or about on par) with SGC or PSA. I've seen a few weak BVG grades but then again I've seen some pretty shoddy grading by PSA also.