Having tested both extensively on road and track I would prefer the adjustable kit over the non adjustable ones which are totally diferent design (and possibly base design manufacturer) since its :
a) stainless steel
c) much more sophisticated in terms of actual damping capabiltities with external reservoirs.
I found their Sportline Corse kit for my GTA very good, both for road use and for track days.
They are way better than oem in every way, comfort, control, handling.
Some folks on here did have to replace a non adjustable damper under warrenty, but I certainly have been giving my adjustable Sportline Corses some grief on Type-R track day tyres and they seem well up for it, easily able to absorb the much higher energy caused by the huge increase in grip of these tyres.
I'm not a doctor - but I really do recommend braking later