You don't need a super-advanced dyno to see what Advanced Designs do. A "regular" SPA sinusoidal will do just fine.
Hint: adjusters, should, you know, *adjust* something.
Good shocks are made by (in no particular order) Bilstein, Koni, Penske, Ohlins, and Sachs. Anything else should be carefully evaluated on an *independant dyno* before you part with your clams.
If you're on a budget, Bilstein make a great product that's very affordable and usually can be had in a user-rebuildable spec. The downside to Bilstein is that getting adjustability is a bit of an issue.
The Koni is another good budget shock. Konis can be had adjustable from the manufacturer and the adjuster works. They are also revalveable, although not by the end users like Bilsteins are. They also seem to have problems staying together, at least in high-force applications like Stock-class autocross.
So if you go Bilstein, you buy two sets and the spare set has a different valving in it. If you buy Koni, you buy a spare, identical set to replace the ones that blow out.
The next step up is Penske and Ohlins. Both are solid shocks. Sachs I know less about from firsthand experience, but they have a solid reputation at the top levels - anybody whose shocks are on an F1 car can probably be trusted.
Beware beware beware anybody making bespoke shocks. Trust me on this.