Ive got the shanes and a buddy has the 3DS. THe 3DS is a much stiffer binding. I would say you need to try these on for sure becuase they dont have as many lace zones to get a tight personal fit.
For the shanes, great entry and release. Much more support than I was expecting. Great foot bed, could be a little bit better for draining...
I would say try before you buy. go into your shop and throw each one on for a little while, they offer really different styles of support. just my .02