you guys are all freaking me out

...
I had an 08 X5 3.0 and never had a mechanical or electrical problem other than a dvd unit that gave me read errors and was replaced immediately after delivery...
i have traded that in for an Acura MDX because i wanted more HP and they have a really nice advanced interior/tech pkg..
the MDX also gave me some NAV problems eventhough it was hard drive based. froze a few times and even lost track of where i was headed.
these jap vehicles do not compares to the bimmer when it comes to performance and handling... i wish i had gotten the V8 from the get go..
now i'm back to BMW and looking at a 2012 50i but you guys are scaring me into keeping my Acura.. wft is up with all these issues?