I can only tell you what my experience was. I, too, am a long-time east coast ice/crud skiier (although it was 40 years ago, it seems like yesterday the first time I slid off a slab of ice--you know, the so-called "12-inch base"--and into the rocks and trees). Skiing in Utah was an absolute delight. There are plenty of blues that are wide and groomed and fun and easy to navigate and they are generally not crowded. Some are more steep than a typical eastern blue, but the snow was incredible. I did some blacks here and there and they were no more difficult and often easier than east coast blacks because I wasn't scraping ice. Now there were also plenty of slopes that I wouldn't even think about trying due to my age and ability (or lack thereof).
You and your teens will love it, and no doubt will want to get off the groomers and try some powder skiing if the conditions are right. (If your teens are boarders, you will not be able to go to Alta or Deer Valley.)
I have just one regret about Utah skiing, and it's a big one: Why didn't I start going there 20 years ago? Oh well, better late than never. We're going back again later this year.
Enjoy.