I skied park city/canyons this year for the first time. I would say there is some nice terrain in park city. Especially if you ride the old lifts like jupiter. Mcconky and 9990 have some nice steep terrain as well. I had to drop the kids off at ski school and then pick them up, so I was only able to ski about 33k of vert that day, so I barely got over to 9990 to make one lap and then I had to head back over to get the kids. Of course, PCMR has 7300 acres and breck is like 2900. I would generally say Utah resorts have more steeper terrain. Of course, every where has something for everyone. If I was going to spend a couple mil on a place, I would rather have a nice true ski in/out place in the colony than I what the same would buy at breck/vail.
I've only skied breck 3x this year, twice with the kids. breck has some nice terrain, a lot you have to hike to which I don't really like. I don't really think their "double black" really deserves the hype, but that goes for all of colorado.
Again, I left my in laws at 645 and pulled into rockstar early bird (free!) parking at 745 @ PC. Compared to my 515 to 530 departures from Golden for Vail/Breck (I admittedly leave early as I would rather play cards with my kids than sit in traffic). As I mentioned earlier, we left my in laws at 8 and pulled into the snowbasin lot at 830. When I lived in holliday, I was 30 mins to alta. It's nice to live in and pay city prices and be so close. The alta snowfall is also nice - it was over 700" the year I skied there (average of 545").