I've seen reviews from Evo X, STis, and the 1M. They all say great things about these dampers.
These are what I plan on getting hopefully by summer time for my E46 M3. Some say that it may be worthwhile to upgrade to RS or RS Pro, but for me personally, having a single adjustable is just enough for my goals and interests.
I'm excited to see more reviews on E46 and E90 M3s.