The Nuptse are a very good general mountaineering crampon, but are set apart by the very low (comparatively at least!) price. Build quality is very good, and didn't have any balling issues with loose snow.
When it comes to climbing especially on hard ice, the small front points do feel a bit lacking, but this is to be expected since they are not a full-on climbing crampon. Secondary points are also smaller than on some other models such as Grivel G12, but never felt insecure.
Excellent all-round crampon at great price.