 I have owned many convertible cars in my life (Porsche, Ferrari, Aston) and none are as rewarding as the M3.  The engine is a true masterpiece.  The SMG is brillant.  I almost went with a manual due to a bit of negative press about the SMG but I am glad I got the SMG.  It is absolutely outstanding.  Auto boxes with shift modes are not even close.  The car handles very well for a open top car. I purchased the hardtop and it looks fantastic (even better than the coupe) and adds a bit more rigidity.  I highly recommend this car and I believe the 6 cyclinder will become a classic. This is a real crowd pleaser as well and will certainly get you noticed