Went on a East Coast to West Coast and back road trip last year and stopped in so many beautiful places. My heart is still in Santa Fe but San Juan Capistrano was beautiful as well.
That's interesting that you liked Santa Fe so much! I visited once and while I liked it ok, I will probably never feel the need to go back. The homogeneous architecture (pretty much every building is the same color and style) made the place seem so stale and boring, and a little creepy, to be honest.
What about Santa Fe is a draw to you? Maybe I missed something.