The Kass is stiffer. I wanted something a little softer for screwing around with ground tricks so I checked out some other boards. The TRS was in between the Banana and Kass. I ended up getting a Gnu Park Pickle which is stiffer than the TRS (they are rated about the same by Mervin), but still softer than the Kass. I kinda wish I went with the TRS since it's a little softer and was easier to screw around on. I weigh about 160 lbs and was riding boards around the 155 mark (except the Banana was 152, maybe not a fair comparison).