Posted By:
JimBMy personal view is that all three companies are about the same in terms of their consisency in grading. They are all human and make mistakes. You see more examples of mistakes in PSA holders here for two reasons: 1) Some members on this board like to highlight every instance they find and 2) PSA has probably graded 10x as many cards as the other two companies combined so if all other things were equal there would be 10x as many mistakes in PSA holders.
I don't think it is necessarily the case that more people on this board prefer SGC. There are about 600 lurkers on this board if I remember the number Leon posted a few months ago correctly. Just because there are some vocal advocates for one service or another does not mean they represent large numbers of people. I have conversed with a lot of people who lurk on this site who prefer PSA and get sick of all the PSA bashing.
JimB