An advantage to bilsteins is that they typically can be re-valved for whatever your needs are pretty much anywhere. If your a DIY type, parts/valves/etc are available to be bought and TONS of aftermarket support.

Fox/hotchkis/viking/whoever might all be great products but valving even when adjustable with knobs, only have so much range and no vendor has been forth coming with with shock dynos with numbers... or even vague questions like what like spring rate/weight are they valved for. Maybe they work well, maybe you have too much spring.

When your out of range or adjustment, or when it needs to be rebuilt/change for your app what do you do? << serious question