Im actually doint the reverse, moving from the Z to the 335i. Ive driven 3 different Z models, 350z Touring, 370z W/ Sprts Psckage and the Nismo 370z, they all are fun to drive but for the 335i offers more.
What reasons did he have for switching?
Also, im not certain on the depreciation of 11' 335i, but he could end up being "upside down" in his loan if he has one.
VQ35 --> VQ37 --> N54
Daily Beater: Nissan Armada