Which of these resorts for March 20 - 27

Greetings.

My wife, son, and I are planning a trip from 3/20 - 3/27. We have
narrowed our choices to the following 5 possibilities (listed in
alphabetical order):

1. Banff (Lake Louise and Sunshine)
2. Big Mountain
3. Snowbird/Alta
4. Snowmass
5. Steamboat

First, should any of these be eliminated from consideration due to
potentially poor conditions at that time of year. Specifically, I'm
worried that Steamboat, due to its relatively low elevation (for
Colorado) and primarily western exposure, will be too slushy.

Secondly, will Big Mountain keep us interested for six days of skiing?
My wife and I like long cruisers and the easier blacks, and would
really like more powder experience. Two or three bumped-up runs a day
are enough for us. My son (age 18) skis everything up through the
easier double-blacks - steep with big moguls is OK, but no cliff
jumping/ultra-narrow chutes, etc.

Of course we really hate crowded lift-lines and slopes (like Vail, for
example) and icy conditions.

Nightlife is a minor consideration. We like to hit a few good
restaurants and bars, but no major partying. Strongly prefer moderate
ski-in/ski-out lodging which must have a nice outdoor hot tub.
Examples of good lodging choices would be the Cliffs Lodge at Snowbird
or the Stonebridge (maybe a bit expensive...) at Snowmass. I know no
ski-in/ski-out in Banff. We were thinking about the Inns of Banff if
we go there. Anyone familiar with that place?

And finally, is there anyplace else we should be considering? For
example, is there enough terrain at Jackson Hole within our abilities?
"Our" meaning my wife and I - I know my son would love it.

Any and all advice is welcome and appreciated!

Thanks,
Mark