Nice write-up! This is the first time I'm hearing about this product. Looks like great price/performance. I like the modest drop.
Monotube dampers are undoubtedly the way to go. Better communication with the road and as you noted, they are faster to respond to imperfections.
Do you have an LSD? Those subframe bushings make the biggest difference under WOT. The back end no longer squirms around. I have a Quaife and it works extremely well in combination with the M3 bushings.
2011 BMW E92 335i, 6MT, Le Mans blue - Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, SS brake lines, brake ducting, Michelin PSS, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, VAC RSIK, Sparcos; work by VAC Motorsports in Philadelphia