Cheers for the info guys.
Budget isn't completely concrete yet, but probably around £7-8k when we come to buying it. The main reason for her wanting one is because it's a cool looking car. I will hold my hands up and say I have never even been in one, so have no idea what they're actually like as a car.
Engine wise, again, no idea, my thoughts were probably heading towards the Twin Air version.
I quite like the idea of having access to the 500 as I think they're very cool, however if you have some decent alternatives, women friendly alternatives, then I'd love to know