m3 of course. ask yourself this question, if you see a 5 yr old mb c32 amg and a 5 yr old e46 m3 on the road which one would you prefer? yeah sure the new amg version of the c class looks hot right now but it won't stand the test of time.
2002 steel gray M3 coupe, SMG, premium package, navigation (sold, still regretting)
2008 jet black 535i sport, premium, ipod/usb (leased but not forgotten)
2010 Wicked White Evolution MR Touring (sold and missed)
2009 Smoky Granite Mica Lexus IS350, F-Sport products: 19'' staggered forged wheels, suspension, intake, exhaust, rear sway bar