I'd agree with X. Although I have never driven a 2011, all the complaints here about the tip in delay (hesitation when accelerating) would steer me clear. There are lots of things I can put up with, but throttle delay is not one of them.
2012 535xi|Dark Graphite|Black Interior|M-Sport|
Prior BMW's: 1987 325e|1993 740i|1998 740il|2002 745li|2007 750li|2006 750li