Multi-contour seats were a must when I ordered my 2013. Coming out of a 2011 50i, this X feels stronger with the M-performance option. The black exhaust tips are a nice touch, distinct from standard M-sport, and would look great with a black exterior.

Plenty of power with this setup, and really begs for handling to match (go with adaptive drive if $ not an issue). I have not experienced the Dinan tune, but expect the need to for adaptive drive to be even greater for aggressive driving.

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AtlX
2014 X5 35i M-Sport While/Black (wife)
2013 X5 50i M-Sport Silver/Black
2011 X5 50i Silver/Black (retired)
2008 335i Convertible Space Gray/Gray (retired)
2004 M3 Convertible Blue/Gray (retired)
2001 X5 4.4i White/Black (retired)