The M5 has the seriously understated, executive I'll-fuck-your-day-up look down pat. I've always admired it for that, and for the driving dynamics.
It did feel extremely heavy at the 2 Day M School though...
If I was late 20's+ I would more strongly consider the M5. I like the M3 for its mod community too.
E92 335i: Space Grey|Coral Red|Aluminum Trim
Hold out for the BRZ STI or... Rocket Bunny FRS. Update: Scratch that. I've got a 2015 5.0/6MT with my name on it.