I run half size or one size down for ASICS Compared to Nike. The solution speed are nice shoes. Very light and I find way more supportive than the Vapor X. However, the ASICS takes a few wears to break in. I’ve had friends that hate them because of this. They are my fav ASICS shoes so far, I have yet to try the court FF2 (djoker‘s shoes) they are in the box. Next shoes to try after my ASICS challengers wear out - which is gonna be soon