I prefer the park hopper because it never expires and I don't have to feel like I'm wasting days when I have a resort day. The differences are mainly that with the Ultimate park hopper you can go to any park and day during the time you are at Disney. The Park Hoppers get you the number of day admission into the major park, plus only a certain number of pluses to be used at the waterparks or pleasure island. With the 7 day, you would get 4 pluses. The Park Hopper would not get you into Disney Quest, but I think the UPH does, so that is also a factor, but we do not plan to to to DQ. You can find the prices of both on these boards, under ticket prices.