We have stayed at each of the allstars and this past june we stayed for 2 weeks at Pop. We loved it. We had 12 people, 6 adults, 1 teen and 5 kids. 4 people to a room, no problems. But we are park people, we hit the pools in the evenings if we had time. The rooms were good, we had plenty of room for our clothes and luggage storage. I brought along Bongo bags to keep dirty laundry in before carting it to the laundry. The food court was nice, I liked the set up of the all stars better, with the gift shop seperate from the food court. Better pool areas for the kids at Pop and the lake view is nice.
I would go back again and actually I think we will stay at Pop in Feb. with the AP discounts its a great bargain.
So it all boils down to...what are you going for? If you want to be at Disney with all the perks early entry, package delivery to resort, the option of eride nights, Disney transportation to the parks etc., then Pop is perfect. If you want something more like fitness equipment, hot tubs, spa options etc. then you should look elsewhere.