Originally Posted by nonick
I will probably get flamed for saying this but how many people know what an M3 is, it looks awesome and I love it, but it looks like a 3 series but on pimp juice, it kinda the same that a person can't tell the difference between an 318 and a 335. While the 650i will have a relaxed but firm drive and from my own experience it certainly turns heads.
The ultimate would certainly be a M6 but I don't currently have the financial means to acquire it.
It sounds like you are making your decision on which car to buy based on which one will turn the most heads.
In which case the M3 will be wasted on you. Get the 650i.