Monique Y. Mudama wrote:

But I don't want a ski that will perform optimally in all conditions ... I
want a ski that will perform decently in most. I don't know if that's enough
of a concession to be realistic, though.

Here's a video that shows why you don't need edges, or even bases, on a
powder ski - look at the about half way point in the video (first half
is somebody tobogganing.)

http://jacksonhole.com/movies/012702.html

Gawd I love his expression when he pauses for air...