The 335i's ZF 6AT tranny is one of the reasons why I chose the 335i over the '07 Infiniti G35! The 335i 6AT tranny shifts are lightning-fast (100ms) and super-smooth, compared to the slower (~1/2 sec. upshift delay), clunky 5AT in the Inifiniti G35.
btw - I use the Paddles 100% of time; they're phenomenal!
