I'd stop at Silverton and never leave. But, that type of riding is probably not your gig.
Purgatory (Durango Mountain) can be pretty nice. It is a real mountain and has some of the best named runs of any mountain anywhere. The fall lines are a little weird though and it doesn't get nearly the amounts of snow that Wolf Creek or Silverton do. The big advantage is that you can stay in Durango, which is a pretty sweet town. Better restaurants and bars by far. Plus there is a bit of a scene with the college right there. Not an over bearing college town though.
If you can wait to make your decision I'd base going there on conditions. If they are getting the goods then go for it, if not, Wolf Creek is going to be better. Pagosa Springs is definitely the nicer place to stay, more options for when you are off the hill. The only problem is that if the pass closes, it closes on that side. South Fork side rarely closes until after the ski area. So be warned.