Just went this past weekend and hit Snowbasin. If you like steep, untracked powder, go there.
It snowed Friday which is maybe why you were able to find something untouched but it wouldn't be entire runs or large areas untouched. At least in my book.
Snowbasin is about equidistant from downtown SLC as the Cottonwood resorts are, and easier to drive to.
This is wrong as well. Cottonwood resorts are much closer to SLC than basin.