I have XYZ adjustable shocks on mine. I do agree quality wise they are good but definitely you can see why they are cheaper. Its the little things in the machining etc which are not perfect. As you say I guess you get what you pay for.
My brakes are Wilwood, 6 piston fronts, 4 piston rears, they on the other hand I have to say are top quality. I then have a Race Brakes Sydney supplied booster/master which was also perfect. Brake performance and pedal feel is spot on. I am yet to put it on a track though, that’s when I will really know how they perform, although part of the engineering tests was measuring brake fade etc.