I am going to be a little controversial here in saying that you should look at the A5 cabrio.
A friend as looking for a 4 seater cabrio when the A5 was first coming out and we looked at the 3 series and the A5.
I was really disappointed by the BMW for the following reasons:
Both the cars I test drove had dreadful rattles from the roof (the salesman said it wasnt rattling, but it clearly was!)
The front seats were unsupportive (even the sports seats)
The rear seats were virtually unusable (not because of lack of leg room but because they are incredibly upright to get the roof in the boot - made them really uncomfortable)
the auto box was sluggish and so the car felt very heavy (drove the 330d and 330i)
the boot is tiny - even with roof up
there is a lot of buffeting (although as the salesman insisted on coming out, there was no wind break)
The A5 cabrio (s-line) in comparison:
is a true 4 seater - front seats are insanely confortable, and the rear seats are perfectly usable with sufficient leg room
has a very practical boot (both roof up and down) and seats fold flat making even more space
the acoustic hood (standard on s-line models) is beautifully refined - with it up you wouldnt know you here in a soft top, it is genuinely that quiet on the motorway
the hood can be lowered and raised at up to 30mph
I know it isnt rear wheel drive - but there is the quattro or even the S5 cabrio now...http://www.audi.co.uk/new-cars/a5/s5-cabriolet.html
Just my thoughts anyway
