I rode a 20"x5" 81.5º TSI and went to the 21"x5" 81.5º Orion and got used to it instantly. Really. I think my first whip on the Orion was better than all the others I had done on my TSI.Mine comes wednesday and I'm dying for it. Coming from a TSI FlowMaster I rode for two years I can't wait to see how it feels.
Yours looks awesome btw