I've bought the Adidas Superstar ADV Vulc, and had to size down 0,5 (8,5 instead of 9 I usually buy).
The 9 was really too big. It felt like a 9,5-10 in other brands.
Skated them once for the moment, and really fucking good. The insole is a bit strange at first but the skating feels good, the boardfeel is alright, the grippyness is good but not "vans good". They are really light and felt good.