Well Plus 8 for me, I tried a V6 but found the clutch heavy and the wrong soundtrack but I'm a lifelong V8 man. The Roadster V6 will give far better mpg if you are a long tour man.
Prices your side seem high to me but I have included the
MMC International used car search for you to play with and get an idea of prices, I have it set for Plus8 search but you can alter it as you wish for the Roadster V6 models and of course select a particular country.
Good luck with your choice both are highly desirable and capable cars, you need to drive both if possible.
