Replying to Is Deer Valley really that nice?

So I'm doing a trip with my family and another up to Big Sky for a week in mid January and will also be stopping by Salt Lake on the way there or back to either ski Alta/Snowbird or Deer Valley for a few days. I know it's super uppity and expensive but we have a friend with a cabin up there so lodging won't be an issue and our Ikonpass will cover either resort...

Was just wondering if we should stay near it and ski Deer Valley or just get a place in SLC and ski Alta and Snowbird.

Any Utah locals wanna give this socal guy some insight? Don't care about park (obviously with these resorts). Just want some quality all mountain skiing.