I Have the DarwinPro one since i got it for unreasonably cheap. and it fits really well and it doesn't have a problem that MOST people overlook and it Drastically changes the way the wing looks on the car: I call it the Tilt. How far the wing tilts forwards or backwards is the easiest way to tell if a V1 wing is a rep most of the time but the DPRO sits almost completely flat instead of tilting far forward and looking quite like an air brake on most reps.
Only problem is that the deck is slighty mismolded. But no fitment issues or wobbling issues whatsoever