I agree with and support Mr. Strano, as a valued Vendor who isn't in the business to 'over sell'.
However, I strongly believe that Quality Non Adjustable dampers (Bilstein) have their place too... Well valved Bilsteins are a performance bargain (Monotube!), and if competing in a tight class, can save you valuable points for not being adjustable. I personally know people winning in a broad range of classes at NASA on them. Rebuilds are cheap and can be done by many qualified companies and race teams across the country.
The initial setup can be more of a pain with the custom valving, but once you've got it close, YOU JUST FOCUS ON THE DRIVING. Instead of possibly adjusting yourself into a wall. I've seen it happen, Hell, I've almost done it myself. Tuning shocks on the track by driver feel takes a lot of seat time, patience, and practice. There's something to be said about having the car setup well enough, and learning to drive its strengths and it's faults. Instead of always turning to a mechanical 'fix', it makes us better drivers to learn to adapt, and 'work with what you got' sometimes.