Light, fast and fun
If I was to have a one ski A/T quiver, the Manaslu would be one of my top picks. This ski, while not that wide is incredibly versatile. It is super light, the skin system is really slick and it can do just about anything except ride switch (at least very easily). The rocker is a big bonus and while it is enough to keep you riding on top it does not shorten the usable base by much. I have skied these in pow, corn and everything in between and they have held up pretty darn well.
In short I use these on the days in which the conditions are unknown and they never leave me feeling unhappy.