2009-2010's are pretty much identical. 2010 production year was very short so you might want to expand your search to 2011.
2011's have LED tails, Comp Pack became avail and on 2011.5 (Sep 2010 production) models there are some nav enhancements among with auto stop function.... Just a quick very basic info for you.
Retired: 2011 E92 M3 AW w/ Silver Novillo ZCP, ZTP, ZPP, 494, 6FL, 507, 302 & 415.....ED April 29th, 2010
Retired: 2007 E92 335i -Space Gray, Black Leatherette + Alum, Nav, ZCW, ZSP, PDC, CA & Sunshade.....ED Oct 19th, 2006