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As others have said PSA is still the most “accepted” so easier to sell/trade/etc. Degree, I have a couple of decent ones graded with them that local card shops won’t take. TAG seems to be a bit better on that, and no upcharge on either of those. PSA I loath, but even with the issues seems to still be the standard, but I have moved to mostly TAG submission, with a degree submission for PC here and there.