I have always wanted an M3 since I was a kid. After owning a normal 3-series it was time for fun. I first drove the new 2008-2010 M3 with V8 and while it looks nice and very luxurious it was too soft for a performance car. I then drove the E46 M3 and was blown away by the incredible performance! It's fast as Porsche at half the cost and twice the ability to use as a normal daily driver and more useful. So I bought a perfect 2006 BMW M3 with competition package. The stopping power of the M3 brakes are incredible and blow away most other cars. I am not a fan of the newer iDrive and fortunately this car does not have it.
SMG, engine note, ///M sport seats (red leather!), Competition package brakes and performance!
Navigation is outdated compared to iDrive system but easier to use than iDrive. Maintenance is expensive and brakes costly to replace.