I realize I'll never convince EaglePdx, but the OP is an advanced skier from Sugarloaf skiing solo on a first ever trip to Utah. The idea of someone like that staying in Kimball Junction to ski third rate areas in Utah's regional context rather than the crown jewels of Alta and Snowbird, I don't get that at all.
And suppose the OP wants to form his own opinion on a first trip to Utah instead of just taking my or anyone else's word for it? That's a big reason to rent a car, try lots of different places. Also the discount lift tickets are down in SLC ski shops, not up in Park City.