Gone are the days of Diesels being slow, i suspect that most petrol cars would struggle against the BMW 6 cylinder diesel engines.
If your doing sub 10k then yeah i guess i might go for a petrol but diesel torque is addictive. Personally on 20k miles a year i'll stick to high 40's to 50mpg, fuel prices are only going up.
Really like the new car, engine seems more refined from what i remember of the mk4 i had.