Google
My dealer had a test drive day for existing customers.... all the demos out at a Golf club, just turn up and try whatever you liked (except the M5/6). It would have been rude not to go.
Tried a 330d Sport
and the 520d Sport. Was blown away by the 330d and very impressed with how good the 520d was (almost as fast as an E46 320d). I know in the long run it's gonna cost me!
So I'll be lurking on the boards while I save for an E90.