We are very similar actually, we are huge fans of ASSP, we have just had two very bad stays at Pop, one was mold in the room and the other was a cleanliness issue. The first time the service was very bad and it took a large amount of time to resolve and for them to move us to a different room. They could not keep us within preferred and did want to refund us the difference. Eventually it was resolved, so we tried to stay there again, when we went into our room it smelled like smoke, my daughter has an allergy and we expressed our concern, they said they would clean it. When we returned the small had improved, but we actually found cigarette buts and hair in the tub. That time we asked to be moved to a different resort.
I know that it is possible to have less than perfect experiences at any hotel, in fact we had one at POR, but it is how it is handled that makes or breaks it for us.
We are pro-value resorts, we don't spend hours upon hours in the room, double beds do not bother us, not having a slide or a hot tub doesn't bug us.