Monday will be the best of the three days most anywhere if you can only do one of the days. Saturday will probably be a typical Saturday at most of the local hills (i.e. not a destination resort), and Sunday will be a zoo at most places.
I'm gonna shoot for Monday since my wife does not get the day off. I will most likely be at Catamount (season pass), Jiminy (variety of terrain that I can ski), or Hunter (prob best conditions). It will probably be a game time decision.