I am kicking around the idea of getting a roadster and am wondering if people can weigh in on how much better the cooling system is for the 2.xs (I understand there was a cooling system upgrade from 1.5 to 2.0). I live in San Antonio and the days from June through September are over 95 degrees 95% of the time and over 100 degrees for 10-50 days a year. I'd mostly use this as an around town car, so likely never a roadtrip. Trying to gauge how important limiting my search to a 2.x is. Thx.