The experience I have is a lot of time comparing the differences between running a single damper/spring and two. With a lot of track time, and road time trying to find a good set up for these cars. After many hours of R&D this set up gives the best result. There is a big difference between remote reservoir dampers, and a standard KE strut. I really don't think the two can be compared. It is not overkill, its an extra damper, not an extra spring and not increasing the spring rate. The benefits being you get a better controlled bump and rebound, with out having stupidly high spring rates. The biggest improvement being the better rebound control the extra shock gives you. Yes quality is the most important thing of course, but quality is Proflex, Reiger, BOS, Ohlins, not your Pedder's or Monroe. There is a big difference. Anyway its good for everyone to have there own opinion, but I'm sticking to mine.