They sold 2+2 TTs in other countries. Seriously though, the back seats in all the cars you mention are basically good for kids or midgets. My 11 year old son is starting to get to the stage where he is too big to fit for anything longer then a short trip. If you buy the 2+2 to make your mates happy they won't be once they have ridden in the back.
Simple answer.....buy the car that makes YOU happy.