Really difficult, but...
Ross- so much to choose from
McKenzie- variation, locations, green complexes
Raynor- interesting variations of template holes
Doak- bold minimalism
Coore and Crenshaw- quiet, subtle, emphsis on strategy
and all of them fun.
Actually, once Old McDonald is built, I guess I could just go to Bandon and stay there, with an occasional foray to Pinehurst area.