Exchanged my Z4M(R) Today for a 2010 370z Anny Black Edition.
First thoughts.... Cracking car the 370z, had a great drive home from Leeds and enjoyed every minute. Lovely engine which pulls in every gear. Such a change from the Z4 which just snapped your neck in sport mode and delivered not a great lot else IMHO. Z4M definitely faster, but having driven both, the 370 does its power in a manner which allows you to enjoy the whole torque and eventual smooth power surge without all the drama. For me that is perfect for day to day driving. Glad i have the BMW "M" T-Shirt but didnt even look back when i drove out of the dealers with my new toy