Can’t argue with the fact that the RS4 is a great looking car, never had the pleasure of driving one but the choice between that and a new M3 would be a seriously difficult decision.
On regards to the reason people opting for the 335D could simply be that they do alot of business miles, whilst having great performance they can retain some good mileage. Love diesels pull at the top end aswel.
Sticking with the ED30 for the next few years, until I land myself a good job or win the lottery.