Man, what a car. I've got a 335xi and a 2000 Z3 M now, so I'm no stranger to Bimmers. But this thing is intimidating, between getting comfortable with the power, the smg tranny (especially!) and all the other tech doo-dads. Dealer is asking $53k for a 2006 that sold for $96k to a doctor who ordered options for his options. Are there issues I should know about before buying? Transmission issues, electrical, etc? Are these cars tender and skittish or solid as a NASA rocket booster? Be brutally honest.