There are a few that I've never stayed at, so I'm just going to rank the ones I have.
1. Copper Creek - not entirely fair since I've only stayed in the cabins but they're awesome and totally worth it IMO. I love the vibe of the entire resort. The lobby is beautiful and I like how "low key" the resort feels. It never feels overly crowded or hectic.
2. Hilton Head - I LOVE HHI. Has a cozy, laid back vibe that makes you feel right at home. The pool areas are quite small but I don't really mind as I mainly go for beach access. I like that it's not "in your face Disney" though I do understand for some people that's a negative. The rooms 100% need a refurb as the room I was in last August was the worst
DVC room I've ever stayed in.
3. Aulani - excellent theming that combines Hawaiian culture and Disney to where it doesn't lean too heavily into one direction. Only big complaint is that I think the pools use WAY too much chlorine. My eyes would sting after being in the lazy river for one lap around. Most people sit by the pool so it isn't hard to find chairs by the beach.
4. Grand Californian - undoubtedly the king of locations when it comes to DVC. Love the entire feel of the resort. Big con for me is how small the pool is. Probably the only resort where I've had to put my stuff along the wall/side due to a lack of chairs.
5. Beach Club - fantastic location and pool. I stayed here a lot when I was younger so feels very nostalgic to me. LOVE the smell of the lobby too.
6. Animal Kingdom Lodge (Kidani) - savannah view is AWESOME!! I've stayed in a studio and a 2 bedroom and having the extra bathroom in the 2 bedroom was the best. The actual rooms do look quite worn/dated and those LONG hallways are no joke. Pool area is lovely with decent amounts of shady spots.
7. Saratoga Springs - kind of underrated IMO. I love being able to walk to Disney Springs and has one of the better main pools. The theming is bland (not a fan of horse racing) but that's not a deal breaker. I especially like staying here when doing Universal trips as it's close to the highway.
8. Polynesian - the entire resort feels so loud and crowded to me. The one extra bedroom in the studio was awesome and I actually like what they did with the refurb. Walls are thinner than toilet paper as I was awoken every day by the screaming kids next door. You could hear everything they were saying. Also I miss the fountain in the lobby that existed before the 2014 refurb.
I've never stayed at these two but I have zero interest in BLT and Riviera. I dislike the bland theming for both. I also don't have any interest in Vero Beach.