I've been working with Serramonte Ford, but haven't tried to strike a deal with them yet. I've been talking to them on and off since May. No pressure. Really enjoyed the special ST show-and-tell they had before the performance academy.
I'm going to order an ST3 so haven't been in a hurry since they haven't started production on them yet. That, and I loathe the haggling often required to get a reasonable deal.
So I will start with Serramonte. I have x-plan pricing, but will see if they can do better (Consumer Reports/TrueCar seems to think they can).