I was thinking of going with the D.I.D. 520ERV3 Gold X'ring Race Chain. I currently have an RK 520 X-ring chain. However, I was told that I would get a little more power to the rear wheel with the DID. Do you guys have any suggestions? Also, just how easy is it to replace the chain. I was thinking of buying the little pocket chain breaker and riveter that MotionPro makes and doing it myself.