This guy wasn't enthused about his experience with SGC:
https://www.blowoutforums.com/showthread.php?t=1230794
Oh, and on that topic, SGC changed their labels for the Pristine graded cards to be abbreviated as PRI instead of PR, which some were confusing with PR for Poor.
So now we have the following grades at the three major TPGs:
BCCG 10: Mint or Better (most people value this as an 8 or 8.5)
BGS/BVG/PSA/SGC 9: Mint
SGC 9.5: Mint+ *newly invented grade: 97 / 9.25?*
BGS/BVG 9.5, SGC 10 (old 98) Black Label, and PSA 10: Gem Mint
BGS 10 Pristine comes in Black Label for all 10 subgrades or Gold Label for one 9.5 subgrade.
SGC Pristine Gold Label (no number, old 100)