Sounds like you're as excited for the upcoming season as I am. 

All three of those resorts typically have solid early-season snowfalls.  Park City and Snowbird are scheduled to open on 11/17 and 11/18 respectively.  And the mountains in Banff just say mid November.  What's nice about both Banff and Park City is that you get a choice of multiple mountains on one lift ticket, so you have the option to ski or ride the resort that has the better snow. 

Now is also a great time to find deals for the early season....and the rest of the season really.  Plus, by booking early, you have a better shot of getting your first choice of lodging and flights.

Here are some great deals for Banff: http://ski.com/specials/special_deals-results.aspx?resID=2&vDate=

We're currently loading all of our sample packages into the deals section of the site, but definitely give one of our agents a call about Park City.  They can also give you some advice on other resorts that typically have great early-season conditions.  1-800-778-8589.

Thanks for writing and we'll see you on the slopes!