The Surge binding from Spark R&D is a bit stiffer and more powerful than the Arc binding, which is why I went with it - I'm a strong rider and I enjoy riding fast so the Surge made sense for me. The Surge highback is a little stiffer, the baseplate is solid and allows for better power transfer, and the ankle and toe straps are a little beefier. This binding is built for big or more powerful riders, hands down. Overall, I love the Tesla T1 system, as the snap ramp is super easy and fast to transition with. Would definitely recommend this binding!!