i think the F3x has a more jock design; all its aim seems like sports and being aggressive at anything.
E9x on the other hand looks like the calm friend we always have, sometimes goes big but most the time, keeps a nice profile and most people like how he rolls. the e9x is a sleek "sunday cruiser" as you might call it whereas the F3x looks like its ready to beat the sorry asses of riced out cars
