I should need sometime to digest the threads here. May be I should take Creekboy's summary of places and look into the resorts.
It will be for top clients in the financial industry so I guess they have expensive taste. No family, so the very large, family-oriented place may not fit, probably somewhere exclusive with good snow, nice runs,nice accmmodation, facilities and F&B outlets. Onsen will be a big plus, of course.