actually i do like the 2011 mustang, don't really care about bmw's.
it came down to the sti or evo and the sti felt really sluggish compared to the evo.
from a roll the ms3 felt faster than the 2008 evo but i think they retuned the 2010 cuz this feels faster than my ms3 did. interior is no comparison, the ms3 was way nicer.
exterior subjective, i like both cars. it got old sitting there spinning the front tires in 1st and 2nd, decided i wanted to go the awd route so i could put the power down.
i also cross shopped the 370z, but in the end i didn't want to go back to an n/a car.