Spent 3 hours bashing with one today, I even did some driving of my own and it's awesome.
It had some very, very rough landings and not a single breakage on it.
Leo on here was at the bash and he has a genuine 5ive and he said that the 5ive is no stronger and he would recommend the X2 any day now he's seen one in the flesh.
They're very very impressive and it will 100% be my next RC.
Video's to follow.