I came from a 2011 E93 M3 and although I absolutely loved that car, the M5 does everything so well in the luxury and performance department. It's a super executive sedan. The one thing that I do miss about my M3 and may ultimately lead me to purchase an M3 as a sibling to my M5 is the nimbleness and the S65 V8 sound of the M3. I'm doing a 2 day M school in April, so I'm excited to see drive both cars at their limits and compare the 2.
You won't be disappointed by the M5, it is a beast!!!!!