Here is my personal experience with k-sport kontrol pro's on my 94 miata on the street and track.
They look REAL NICE in the box! It ends there...
As for valving, I couldn't find a setting that seemed to suit me or the car. To stiff or soft but nothing that felt right. There just harsh, simple as that. On top of that, for the miata they were so low it was rediculous. I called, took pics(compared to a stock set-up) and emailed, the only response I received(not timely either) was thats how we make them and no one else has complained. They were listed as being stock height to I think down 2.5"s. They "actually" started with the shocks topped out at about 2"s lower and went down from there. We all know what that does for a miata's handeling. When I tried to talk to K-Sports tech line about my concerns with the actual ride height and its affect on real handling he had no clue what so ever of what I was talking about. I did my best to get the point across that my car is not for show and while planted in the weeds looks very cool, it doesn't work for E36 M3 on the race track. As he was talking all he really kept saying was "dude you need nawz and 20"s". He was that unhelpfull!
Long and short of it, if you want a good set-up then buy one, either AGX's and ground controls, bilsteins or what ever. BUT buy a KNOWN GOOD QUANTITY. I don't know about the long term quality as I only had them on for one summer, and sold them on ebay for next to nothing. I now have agx's and fat cats setup and went almost 3 seconds faster per lap around Beaver Run's north course.
If you just need something to keep your car from being a pogo stick, I truly think you would be better off getting what ever is on sale at napa.