Depends. I'll do 9 if I don't like the driving.
There's NO way I would pass on an opportunity to drive a police/emergency vehicle, whether it be borrowing or "borrowing". Bonus points if they have toggleable lights and/or sirens. I remember one of the Midtown Madness games had police cars, two different types even, that had toggleable sirens. Totally never drove around chasing pedestrians or paint cans with the sirens blaring, nope, never.
Same goes for big vehicles because they're usually a lot of fun. Veeeeery slow and heavy to handle, but powerful!
Motorbikes I don't like, so am not planning to drive them.
PS. The above translates into 2, 7, 8, and 9.