We've never been disappointed. Sure, the bill of fare is a bit high, but we think it's worth it for a restaurant outside of Manhattan.
The only cons I can think of:
There was a time when the greeter would act disappointed if we didn't order a bottle of champagne and hang out in the little anteroom in the front of the restaurant. No more. Nowadays, they're just glad we're there.
Once, the meal got off on the wrong foot when the lovely complimentary amuse bouches we got were dried out and over-cooked. Only once.
Don't get into the whole exotic waters thing unless that's your bag. The servers must be asked for tap water -- but will gladly bring it.
Now a "pro:"
One of my favorite things to do is sit at the bar after dinner and order coffee -- the coffee service is truly de luxe with schlag, chocolate shavings and 2-3 flavored sugars. If the piano player's your bag, (I like their piano players) having the coffee at the bar places you very close to the piano. It's just a favorite thing I like to do.
Paragon is a graceful, elegant dining establishment and deserves a visit.