You know...this is my first SGC slab. All I've ever had is PSA as well. I like that with PSA they stack really well and they are a bit slimmer...but I really like how the black insert of the SCG slab makes the old white boarder cards "pop."
I know you have mentioned in the past you are a fan of the 1933 Goudey cards. Do you have any of those (I know you said the other day you hadn't added any...but have you ever owned any)? I bought this T206 because I really wanted one in my collection and I just made my first 1933 Goudey purchase...I got a small lot for a really good price (don't have the in hand yet).
But, once they get here I will have examples of the big 3: 1909-11 T206, 1933 Goudey and 1952 Topps.