 If you are looking for a FAST roadster 
that can take sharp corners at 80mph, 
this is your car. At least test drive 
this car before you buy any roadster. 
BMW's Z3 is about the ride...great 
performance, great turning capability, 
surprisingly smooth ride even when not 
going at high speeds, and plenty of 
luxury for a sports car (mine has a 
power convertible top, power seats, 
heated seats, cd player).
I also test drove an SLK and liked it 
for other reasons...but really, they 
are entirely different cars so test 
drive both and you'll know how they 
are different.