Magic is useless. I have a condo at the base. No snowmaking, little grooming, the steeps, when there is snow turn into mogul fields. The blues are short and boring. After a good two foot dump the place is awesome, other then that, forget about it.
Bromely is nice but there's not much to it and the steeper runs are short.
Of your choices, for carving Stratton is your best bet - they keep the rich happy by blowing snow and grooming the crap out of it. Also - that's the only mountain with any kind of carving presence. I haven’t been to Mt Snow since I switched to alpine but as I remember it – sub par snowmaking, grooming, lifts, and masses of humanity.
Okemo has become my mountain of choice this past year. On par with Stratton in snow quality, the crowd has a bit less of that entitled attitude Stratton is famous for, and the runs have more variety IMO.
Every mountain sucks on weekends (when I do 90% of my riding).