Best course relative to site: Stevinson Ranch (Harbottle III), a Doak 6 or 7 on a Doak 2 site (flat wetlands) that still managed to make the Audobon list.
Worst: Brentwood (Robinson), beautiful rolling Hills with native oaks (Doak 5+ potential, even with housing) replaced by concrete ponds, greenside waterfalls, and pine trees (Doak 2).
Spanish Bay was a crater due to sand mining before the course was built, so its hard to judge how well the architects did with the site without seeing the pre- and post- state of that plot. Also, the environmental areas forced upon the course after it opened to protect the native species planted in the dunes constructed around the course (irony?) prevent the layout from living up to its potential. Certainly, the present course is overpriced and could be a much better track, but the original site wasn't as great as one might assume.