It can sometimes be strange unboxing a cube that feels pretty much exactly the same as another cube. The only change that has been made this time is that they have used a spring tensioning instead of the maglev tensioning system which is now becoming more popular. Maglev tensioning works by replacing springs with repelling magnets which reduces friction, however, with the right set-up cubes are very fast anyway, this is particularly true with this cube, it was a bit slow out of the box but once the set-up had been done it performed much better, it might be slightly too fast but I can get some very good solves with it (as can YiHeng Wang!)