Mike,

I agree with Grant on this one, if you are unsettled about the 997TT, then go with the 997GT3 (or GT3RS). Certainly, the streets of LaJolla won't demand AWD for daily driving. Of course, I would go with the 997TT, then tune the c--- out of it (in fact, that is what I am GOING to do ).

If you need to track the car for 8-hour runs, you're better off with the GT3/GT3RS over the TT, but in my mind, ALL the cars you mention (997TT, 997GT3, Gallardo, 430, ZO6) can be daily drivers, so your selection should be based on what you would have the most fun driving everyday, since, for your locale, you could live with anyone of them. And you would use it everyday so it would be more of a steady girlfriend than a hot date.

And finally, this is a place where Porschephiles rule, so you will get advice (including from me) to stick with Porsche. So, in the end, if you are tuning-obsessed (like me) and have a cooperative dealer, then go with the 997TT, if not, then go with the 997GT3/GT3RS.

Al