When PSA held a
"World Series of Grading" contest (grade 30 cards in 15 minutes) at the National several years ago, the winner was Derek Grady, who had been the head grader at SGC. That, my collecting friends, was likely not a coincidence.
There are so many reasons to not like grading: their standards, the fees, some obvious mistakes they've made, the people in charge, Gary Moser, Gerry Schwartz, etc. However, they do a hell of a lot better job at describing a card than, say, Steve Verkman and Lew Lipset used to do. If you're newer to the hobby, consider yourself lucky to have missed that.