allow me to throw in my 2 penneth, although ive only owned Boris for 2 years,ive clocked up 20k in the warmer climes of Dubai, drive it in the "cooler" months Otober to May so similar temps to southern European summer. I have a 2010 3.0l Roadster which is a superb car for the type of driving your talking about Im 6' 3" plenty of room and an absolute delight to drive. I drove the 3,7 Roadster, didn't like it at all, felt a lot heavier, less room due to the size of transmission tunnel and truly awful dash layout ang OMG power steering!!!
If you can find a 3.0l try it.
have fun