As I own a set and track them occasionally so I thought I would throw my 2 pence worth in.
I am a bit of a softie compared to some - subsquently I don't like things to loud, to hard etc - think silenced decat
makes the car more bearable with the mileage I do (30k in 6 months)
This was one of the reasons why I picked up a set as I had heard they are very well damped, great adjustability and offer a good balance between ride quality and handleing.
I am running the firm setup 450lb fronts / 400lb rears and they have been revalved to suit this setup. To be totally honest with you I have no real criticism except a critical part failure that happened on the second day of ownership...
However great customer service from powerstation and free replacement parts meant I can't really complain.
On the road I find them fantastic; comfortable & very balanced, predictable handleing - exactly what a good set of road coillies should do in my opinion.
Like Dan I don't run my car silly low as the front shocks seem to use quite a lot of stroke especially when leant on in a fast/bumpy bends, this causes rubbing where other sets my such as FK's I frequently drive on won't, even if they are lower - however the FKs tend to "bounce" sideways on anything but smooth tarmac mid bend due to the minimal stroke / high rebound often needed when run so low where as the ASTs stay smooth and keep the car on line.
This is by and by at the end of the day as "slamming" a car as low as it will go on a good set of well damped road coillies deafeats the purpose of buying them in the first place as I am sure you all know.
The one piece damping/rebound adjustment means you can never really do anything to properly mess them up setting wise and keeps the adjustment simple to expierment with.
For track use I found them fantastic, I haven't got the track expierence to tell you they are the best etc, as I along with 99% of people on here use the car on the road for the majority of the time - excelling on a track is just a bonus. I have experimented with the settings at both Brands and Snetterton and have found that wound up harder they were smooth & predictable, just sharper due to the stiffened damping. Too much damping on the fronts with the 450lb spring does seem to induce a lot of understeer, especially when exiting a bend & putting the power down.
Thats about all I can tell you if I am honest, I can't go into to much detail about this and that as it really is an art getting the most out a good set of shocks and I don't have the expierence to acheive what some could, but as Coilies go out of all of the sets I have driven on/riden in they strike a perfect day to day balance for me.