kreation uses a much inferior autofit liner, ie; it is not heat moulded. Skinny power strap.
Kreation is 85 flex
Kaos uses salomon customfit sport liner, better, heat moulded liner. fat power strap
Kaos is 85 flex
Pro has leather outer, toebox shock absorber, custom fit pro, even more mouldable liner, fat power strap
Pro flex is 95.