It is adjustable both in height and damping. Custom spring rates are available. You are basically asking what the benefit is of an aftermarket coilover which I am pretty sure there is 1000's of threads on.

 

The OP has been a member for 8 years and has nearly 3k posts. One would think this has been addressed at some point

 

Its kinda like asking what are the advantages of a Type R Civic over the Si? They are both performance oriented Honda's based on the same basic chassis. Is one really better than the other?

One has significantly higher performance capabilities, at higher cost.

In the example of suspension, the more expensive option also includes adjustability. I would argue though that its the performance differences more than the adjustability that maked them more desirable.

 

Depends what youre trying to accomplish with them. If youre just driving on the street then stock is perfectly fine. But if you want the customization - spring rates, ride height, etc. then you have no choice but to go with aftermarket suspension. Ive never tried Ohlins but most people would consider them an upgrade over stock suspension performance-wise. In this case since your 01' stock suspension is probably a bit old and tired, the Ohlins would be a worthy upgrade regardless.

 

I switched to the Sakebomb Garage version of DFVs last year (11k/11k vs. 10k/8k). I don't think I'd spend the money if I only drove on the street as there are alternatives that are plenty good for the street and significantly less expensive. Even 18 clicks soft they are stiffer than stock. It's not a bad ride, but it's noticeably more jiggly. On the track, it's another story as the DFVs transformed the car. I could go on and on about how much I like them, but there are many other posts already that sing their praises. So I'd say it's up to you to decide if the advantages are worth the cost and trade offs based on how you use the car.

 

Drive mine on the street only and sometimes a little faster than zone limit , i wanted the best I could afford<buy cheep buy twice>have tried other less expensive coilovers on my other cars and wanted a better high end unit the<Dual flow valve> has a good following road and track. R&T
for the S2000 as its a high end car <for me anyway>
& also to buy brand new Honda s2000 dampers x4 its a no brainer as the cost is marginal between both. <Man maths>

 

In all honesty OP, you haven't been pursuing any kind of performance driving with enough regularity (that I've seen or heard about) to warrant upgrading. The stock suspension is very capable and will serve your needs very well. If you were to put money towards upgrading anything, I would suggest developing yourself before altering the car. The cost of a set of Ohlins DFV (~$2,000) would fund a great many events (autox/track days).