It depends on what you want, I'd say.
If you want quiet, buildings 54-56 and 66-74 might be your cup of tea (with 66 looking like it might be within walking distance of the Island Pool).
I like building 60-62 so that we're close to the activity center and the much smaller Bayside Pool.
If you want easy pool access with the kids, shoot for buildings 64-66. I like the Island Pool best for kids.
The Clubhouse Pool seems nice but I get a more adult vibe from the layout, although that's really more my impression than anything else.