Raikou's Slicks, Rinia's and Dyuaros are made of the same material, and wear exceptionally fast, compared to the DXPE's and D68's. That's why Irecommend the DXPE's and D68's. I have an original set of DXPE's I mounted more than a year ago, and they're STILLsliding!!
They show little wear, after all that drift time, and from what Ihear, the D68's can't be killed!
Save your bucks, dude, and go Raikou!!
O.K., I recommend staying with stock gearing for now, and get the TRF shocks. Believe me, they are the best you can buy. The higher-end TA05 series comes with them, and for good reason.......They are smooooooooth! Next to the Alloy shaft. the shocks are the next best upgrade you can make to your TT01, and when you upgrade to a higher-end Tamiya, take the TRF's with you. I guarantee you, TRF's are some of the best!!