If you're not into vintage in any way, shape, or form, you're likely not going to be too familiar with SGC. If you looked at the front page of their site, it's plastered with vintage card photos. Looking at their list of "Most Popular on Ebay" (in SGC slabs), they are all vintage sets. The majority of their specials cater to the vintage collector. SGC targeted the vintage market from the get go when they came out. So, the majority of people associate them with vintage cards, more so pre-war, than with modern cards.
If you're just keeping the card for your PC, I recommend just checking out the slabs of the big three and going with whatever one you like and whatever one presents well to you because, bottom line, that's all that should really matter anyway.
If you're just keeping the card for your PC, I recommend just checking out the slabs of the big three and going with whatever one you like and whatever one presents well to you because, bottom line, that's all that should really matter anyway.