I bought a volvo S40 2.0D last month. Its so far been fantastic! Does drink quite abit when you give it some, bought it for long journeys and for the girlfriend to use when she passes her test. Not the quietest diesel around but is fast in a straight line. I say that, as it would be better in rear wheel drive, when powering away your not fully in control when turning, the understeer has caught me out a few times, but some serious tyres on it would probably prevent the tyres skipping on the road as much. The volvo has a great engine and plenty of room for me (6"5) though little room behind me. But If i had to choose one I would choose a lexus, front wheels steer, rear wheels drive to me thats a good set up.
MR