Hey there, nice review.
I'm interested in your real world economy. I generally trudge up and down the motorway - my daily commute is a 70 mile drive, 60 of which is on the motorway, most of that is between 60-70mph due to traffic conditions.
I'm hoping to be able to get a 330D but may have to roll for the 320D if the economy is bad. I'm hoping for 50mpg from the 330 - hopelessly optimistic you think?