Tough decision, Crash. To try to help sort it out, I'm in the midst of running acceleration analyses for each of these you are interested in and when finished I'll post the graph on the '!X3 Acceleration Files - Master List!' [
http://x3.xbimmers.com/forums/showthread.php?t=1149189 ]. I'll also make a table to compare internal dimensions and measures as I did with the other Mnfrs' SUVs. I hope it helps with your decision.