SSR is a good bang for your buck. Cheaper buy in and longer contract life with decent annual dues. If you don't mind contract expiration being sooner, OKW is a similar bang for your buck and owning at OKW gets you 11 month booking priority for HH section and cheap 3BR grand villas (can't get a GV for so few points at the other resorts). Tough to book those GVs unless you own there, same with booking in the HH category. But now SSR has booking categories too...not sure which will be toughest to book but it might be nice to own there to get the category you prefer.
We also went with HHI as that is a really low buy in (we got for $50pp a while ago). They have a shorter contract life too AND they have really high annual dues. But it will take like 12 years or so for those high annual dues to eat up the buy in savings. If you might only own for a few years, then HHI might be good. Or, like us, we figured we take the savings when we bought the HHI over the long term savings of a lover annual dues resort as we figured we'd be more financially sound later down the line. And we like to use our HHI points to stay at HHI in the warmer months which are tough to book at 7 months out. Vero Beach is similar but even higher in annual dues so the savings get eaten up more quickly.