These skis may not be the fattest skis on the planet, but they definitely aren't of the skinny variety.
I've skied the REX's in varying conditions from waist-deep pow to hardpack and they great in both. The Atomic Beta technology is for real because these skis are very light, but are as stable as a race ski.
The bottom-line is that these skis excel in all conditions. If you can have just one ski, get these!