I own at both resorts. The MF are a lot less at Park Regency but Park Plaza units are much larger and nicer. They are both excellent values because it has become very difficult to trade into park city thru either II or RCI or Trading Places under their new ownership. Both types of ownership are deeded floating weeks. The Prime season weeks are the only ones to purchase. (ski weeks 1-17 and 45-52). Both are easy to reserve by calling one year in advance and there are no black out weeks such as presidents week or Xmas. Park Plaza does restrict sundance reservations to every other year but Park Regency does not. Both are really excellent for skiers because you can purchase bonus time for your own use. Best source of resale weeks is Redweek, although I have seen some on ebay every now and then.