Lots of good choices and the quality seems to be spot on for all of the makes. I guess it boils down to price and sound.
2012 Grand Cherokee SRT8 - her car
2013 M5, AW, black extended merino, AMS DP's, BEL Sti-R, Laser Blinder, RKT lip, tint
2014 JK Rubicon Unlimited, Daily Driver
2011 535i - (temp car) SOLD
2008 E60 M5 - Gone