Same boat man. The xi with stage 2 is a beast!
Originally Posted by The Eleven
LOL. I did the exact same thing. Had all intentions of ordering 535i. Test drove a 550i on a whim, ended up buying it (with the great end of model year incentives they had it was very close to the $$$ of an ordered 535i) and just got the stage 2 installed two weeks ago. Absolutely zero regrets and would do it again in a heartbeat.
Current: 2012 M-Sport 550i X-drive Dinan Stage 2, 1973 911 with 930 Motor (340 hp 2200 lbs).
Gone but not forgotten: 2007 911 Turbo, 2005 911 Carrera S, 07 BMW M Coupe, 07 335 XI, 05 Mercedes R500