It really depends on what you are looking for in a community. Park City is trendy and cultural, SLC downtown is "big city" feel, and you can live on a farm and be within 30 minutes of the airport. Lots of options and great areas. Houses are typically on the larger size due to the size of the families that live in Utah.
On another note.....
How difficult is it to live in SLC and be based out of another city? I've looked at all the flights to LAX, SFO, DEN, OAK, LAS, etc. Just not sure how easy it is to jump seat in and out at least until SLC becomes home base.