I played with RDX 300 for 4-5 years before switching to the Ezone Xi, day and night difference, Ezone is long way better than RDX.
You should look at the Ezone Xi 98, RDiS 200 (did not hit with it), and the new VCore 97 tour 310g that will be out next year if you can wait.
2X YY 97T 310 with YY PTSPIN 47/43. ---Yonex PC Light, waiting for VCore TourG. Stan is the MAN.