what's more reliable? (in general)
I personally would say Bimmer, but your question really would require an indepth search ofall issues or non issues of all your choices including actual customer ratings which can be found on this site and also consumer reports website as well.
The BMW wins, by default- and it's a nicer car to drive, too- here's the score: Jag,yikes! Audi,OMG! Jeep,NOOOO BMW,Ahhhhh