I usually a size 10 but with Nike and Adidas I've always gone up half a size and worn a 10.5 for tennis. I have also worn Asics running shoes for years and have always worn a 10.5 there as well. I've been reading that the GR6 is true to size and maybe I don't need a 10.5 and should go with a 10. Anyone been in this situation? What did you go with? Maybe I should just find somewhere close that stocks them and try them both on. That might make too much sense though.