Flashy advertising you say? Curious adjective.
At this point, I'd say Sugarbush. But I have not skied Jay this season. When I get a chance, I will look at their Trail Report and give an assessment.
SB has a lot open right now and it is skiing well. Castlerock is open as well. I would not advise a Jay trip unless their off-piste options are available. Their trails suck. And in all of their flashy advertising, they sidestep the key problem with Jay: its weather. Wind closes the place on many, many days. More than they say. Also that wind scours the trails (hence why the glades are good). So there is a lot of ice. So watch the weather--any forecast for wind should race a red flag.