If powder is what you are looking for, the Kastle ZX108 will serve you well in the backcountry! The ZX108 is 100% freeride and floats superbly in the deep powder. But if you occasionally make some turns on the piste that is no problem for the ZX108. The ZX108 will deliver nice round, wider carved turns on piste and makes sideslipping turns just as easily.
Speeding through tracked snow is what little skis do better than the ZX108. The ZX108 has lots of stability and excellent absorption of irregularities in the terrain, a nice rocker construction and a very nice flex. The Kastle ZX108 will bring maximum fun off piste and solid performance on piste.