VTX is a great ski. Just like every new ski we build, we try to make it compliment the ski we are carrying over so we have two different feeling skis in the product line. In the case of VTX, we needed a compliment to the VTR, which was a high-riding/shallower concave design. VTX had a deeper concave/wider tail to shut down sooner at the buoy. As far as the top contours go, VTX has a pretty radical look, but we didn't have any increase in breakage with this ski. As @UWSkier alluded, all skis have the potential to break.
Athlete feedback was the primary driver for moving back to more flat top designs.