I´ve had a 5.2 Vanguard and added a 5.3 Vader. I´m 75 kg / 165 lb.
The larger Vader actually is snappier, more agile and reacts much more sensitive to edging than the smaller Vanguard. Also, turns are much tighter with less effort with the Vader.
The 5.3 Vader feels way, way larger / longer than the 5.2 Vanguard under your feet. It feels as if you could move around on the deck a lot to find various riding positions, whereas on the Vanguard you can ride in any situation in the same position without any movement.
Lowend is comparably worse with the Vader.
Finally, I feel I´ve made the wrong decision, should have chosen the 5.1 Vader instead of the 5.3.
Anyway, I´ll get me that EVO