Will, the mastermind of Spark R&D, shows the updates for the upcoming season 2019-20.
Also he explains the differences between Arc and Surge bindings. The Arc is the lightest Spark R&D splitboard binding. With reduced weight, especially on the base plate and the straps. The compromise is a slightly lower stiffness. If you want more stiffness and even more power transmission and about 100g is no weight for you, you should prefer the Spark R&D Surge Splitboard binding with full CNC base plate, stronger straps and stiffer highback.