After several days of wooden columns (about 30 cm long spruce pieces to DM 40 cm), I can now say that I am very satisfied. The thickest chunks one creates while the X17 does not instantly, but I prefer to cut it several times easily, and work easily there than to have every time high swing the heavy X25.
The vibration damping and grip are really sensational in the X17, I'm really really excited! With this ax I column really large quantities of wood without hurting me on the back.
The provided very robust plastic blade guard is also super convenient for transporting and hanging.