I've owned BLT and AKV direct for 13 years now.
At first we stayed at BLT nearly every trip. We did stay at AKV. We also got developer points that had to be used at SSR for the first year. We hopped around a good bit. Stayed a time or two at BCV, BWV, OKW, and BRV all within the first 5 years or so.
I didn't care for SSR at first. BLT and AKV were my favorites at the time. BLT for transport convenience to MK and other hotels, and AKV for the theming the on-property restaurants. OKW, BCV, BWV and BRV were all fine. I longed for a Poly
DVC.
Over time my preferences did change. As the newer DVCs were established (Poly, Riv, CCV) and the SSR refurb happened, we enjoyed those newer resorts more. We stayed in a few of the SSR refurb rooms and we now really like SSR. We have some new favorites.
Right now, after 13+ years, Poly, Riv, CCV, SSR, BLT, and AKV...I would stay in any of those in a heartbeat. I'm liking the OKW refurb photos i've seen, but haven't stayed in one yet. I'd prefer Poly, Riv, CCV over BLT and AKV now...probably once they Refurb BLT and AKV my feelings will change. I just think the BLT rooms feel dated now, and AKV is far and some of the restaurants aren't really open yet.
For me the big things are convenience and amenities. Monorail and Skyliner add a TON of convenience for those resorts. Now that SSR has preferred rooms, I can more guarantee a location. Plus now they have two feature pools and a more convenient bridge for getting around the resort and a walking path to Disney Springs. We've been considering buying an SSR resale contract to add on.
I haven't stayed at non-WDW DVCs or GFV yet. GFV looks very nice and has modern rooms, but the theme of the resort is just not my style. It's gorgeous, I'm just not into the super-fancy high-class theme going on. I would stay there if given a chance, but there are many other options that are available so I always book something else.
In terms of non-WDW DVCs we plan to go to Aulani and GCV at some point. It's on our list, just many wrenches and such with Covid...but we'll make it out there. Probably do a 2-week long thing and hit both GCV and Aulani in a big trip.