I would choose Watercolor personally. Alys and Rosemary are overpriced in my opinion for what they offer. All three are very expensive regardless. You really wouldn't ever need to leave Watercolor if you didn't want to. I live in Santa Rosa Beach so I am not bias to any of the areas.
The very natural beauty of Watercolor is what really attracts me. There are tons of great trails for walking/biking in the area also. Be ready for high insurance and association dues in all 3 areas.
Thanks for all of the feedback.
Seems like every house is available in Rosemary.
How long do they expect before Alys is built out?