My first exposure to kettlebells was through RKC, but after looking into it, I chose my certification through WKC. My reason is simple. No other style of kettlebell training produces better results. In other words, those who train with the WKC method outperform anyone else in the field. This does not happen by accident. The acquired ability is proof of the applied technique and methodology.
I still find value in the RKC. With the RKC, you can learn a wider variety of exercises. WKC focuses mostly on competitive exercises such as the swing, snatch, jerk and long cycle. But the WKC also looks outside of kettlebells to supplement kettlebell performance, where RKC tends to promote kettlebells as the all in all (a great marketing approach, but I wouldn’t want to live by it).
Another distinction between the two outfits can be seen in the style of kettlebells they produce. RKC uses cast-iron bells that vary in dimension from weight to weight. The handles are thick and the surface is rough. All of these factors lead to performance and function problems. However, WKC has spent considerable time and effort in producing their own unique style of kettlebell that is far more functional than any other on the market.
Their bells are made from machine-grade steel with finely-tuned dimensions on the handles so that they glide in transition. There is no difference in size regardless of weight; however, they are the only ones making a difference is dimension for gender. Yes, men’s bells are slightly larger than women’s bells. And all the newly designed bells are more ergonomic–they now have “dimples” so that they rest on the forearm better.
These developments are a testament to the WKC approach to perfection, which sets them above their competition.
The good news for all of us is that the WKC and RKC seem to be learning from each other, as competitors in business generally do. So I think the competition has made them both improve. Still, for me, I prefer the WKC, not to mention that their certification courses are far cheaper than those of the RKC.