Was behind a new 535 tonight on the drive home from work, its okay but would much prefer the Z4, but not with the 3.5 bi-turbo, I like the mid level 3.0, the in line 6 cylinder naturally aspirated engine is perfect for the roadster and have heard the 3.5 is too brutal for the chassis of the car. I'd very much like a used Z4 if anyone has one for sale, keeping an eye on Al Fardan to see if Ramadan brings any special deals that might tempt me to open my wallet.