CC and Tekin both have top notch customer service. I've had a MMM replaced thorugh CC warranty and it took longer than I expected, but it might have been several factors in this out of CC's control.
I hope to speak highly of my Tekin 4030 1700kv motor I just bought for my RC8, I'll be sure to report once its running. Outward appearance is enough to see that Tekin takes pride in the presentation of their name.