We want to buy a used 2-seater convertible for under £4000 for three/four long trips every year, so we need some luggage space, comfort for distances, low wind noise with top up for motorways, reasonable fuel consumption and fun to drive around country areas. We are open to all makes and models. What do you think of a BMW Z3 1.9 Roadster or the MG TF 1.8l VVC?