My 550i is my seventh BMW and my favorite to date, even with an M5 and M3 in the mix.

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'11 F10 550i M Sport (ED Aug 1, 2011; US deliv, Sep 12, 2011)
Previously...
'08 E90 M3
'07 E92 335i: ordered Nov '06; delivered Jan '07, totaled Sep '08.
'02 E39 M5: June 2002 - June 2007
'00 E39 540i/6, '97 E39 528i, '92 E34 525i + VW, MBz, Peugeot, Toyota, Olds