How do you define quality?
Poly DVC is larger units, and come with a microwave and toaster. They have two showers. But they have only one real bed, and then a sofa sleeper that many hate. There is a pull-down murphy bed that is super cute.
Poly regular units lack thr microwave and toaster, don't have two showers. But they have two queen beds and a comfortable twin daybed that is more suitable for a tall teen or an adult than the murphy in a DVC unit. The storage is a LOT better in the hotel side. The DVC is stank for storage.
How relatively beat up either is tends to be unit to unit. DVC runs at 99% occupancy all year and gets beat up pretty hard; I don't think Poly DVC is scheduled for refurb until 2023 or 2024. Poly hotel is heading into refurb this year, and some rooms are in better shape than others.