If it’s just the two of you, I think you might enjoy Coronado Springs. It’s a convention resort, so it feels a bit more grown up. The pool area is beautiful and it has a huge hot tub. But try and get a room near the lobby - this is a huge resort and the “Ranchos” part seems pretty remote.
On the other hand, Caribbean Beach has the largest rooms of all the mods - but is the oldest (it may have recently had an update). The grounds are gorgeous, lush and tropical - but it is very large and very popular with families, so be prepared for lots of kids, especially in the pool.
I guess it’s up to you - do you feel in a Caribbean mood or a Southwestern mood?