helps HUGELY. Actually, your blog and comparison of the 2012 to the 2013 was spectacular (as was the build sheet). Like I think posts like yours are why the internet was created and is indispensable. Perfect info and details. I just ordered a 2013 650i, carbon black-ivory white, M Sport, 373's, with all the options you recommended. delivery in October. Excited!! Cannot thank you enough.