I have used K-sports for the past year or two, happy with them, still working as Id expect. They can go lower than i need and still handle fine. I'm at winter height currently and get to be a little rougher than i can when really low, enjoying the turns lately. You just really need to make sure you maintain the threads, Id suggest cleaning them every so often to prevent them from locking up when you want to adjust them. Mine were harder to break free than I would have liked going from summer to winter height. Cleaned them up/lubed and all is well now though (didnt have an issue this spring adjusting back to summer height after winter.)
Do not buy coilovers based on color lol, you never see the parts unless you are working on the car. Also, K-sports (Kontrol pro in my case) do not have any camber adjustment built in. Similar price point are ST coilovers (essentially galvanized version of KW V1's,) heard good things about them as well.