The decision between manual and auto was significant. With all the crap drivers in Whitby, combined with common gridlock on the express routes, I had a real concern that my wonky left ankle would make clutch work a real chore.
After testing the 'slushbox" on my 08 Z4R 3.0si I was smitten by it.
Now I have 3 ways to shift depending on conditions and mood. D for cruising, +,- when Im feeling playful, Paddles for when Im boy racer serious.
The Sport Button cannot be more raved about. Its the adrenalin rush beta blockers can't defeat.
I press that button to feel 18 and invincible.
I wouldn't tell anyone what trans works best for them. For me though, the auto with a sport button is just about perfect.