So I plan on getting Look bindings to mount on my J all plays. Iím debating on buying either the SPX12 or NX11. I am 5í10Ē 170lbs I do not ride park and donít ride very aggressively, I ride east coast groomers 70% of the time other than that Iím in the woods. Is there any reason why I shouldnít get the NX11? I feel like it would be plenty sufficient, but Iím also pretty clueless. Thanks.