My foot size is 11.5 US and I skate a 8.5 right now.

I also skate Deathwish decks

Just don't get fooled into buying a "cool looking" deck. It's just going to get scruffed up eventually. By the way, if you're wondering what is the difference between companies it's mostly the concave of the tail and nose.

But good luck buying, and skate on man!