I own about 10 T206's - all SGC. I prefer the black insert, as it enhances the look. Just my opinion.
That said, there is no comparison on the slab itself, as SGC slabs scratch very easy and seem to be of a lesser plastic.
I cross cards to SGC if I want to hold on to them. If there is any possibility that I would consider selling it down the road, I will not cross it. Sure, there are examples of SGC outperforming PSA, but that is usually not the case. PSA is king when it comes to resale.
I like both companies. Both grade a bit different, and both make mistakes. PSA grades a good deal more (a guess), so there may be more mistakes. But the percentage is probably the same.
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