Which version of the Audi 3.0 tdi is it? Some of the sportline and quatro versions look very aggressive. The BMW's are all in my opinion spoiled by the runflat tyres. If you can run with the petrol bill on the 535 then that engine would be my choice. For looks the 525d sport.
The car on my current list is the Mercedes CLS 320d coupe. Probably not practical and current car (Jag Estate - no problems at all) doesn't get repalced until June 2007
