They blow out because people set them on full stiff, then drive around on them and then go looking for pot holes. You set them correctly, and they will be awesome. Their softest setting is equivalent to a stock strut/coil combo, full stiff will be liking welding steel rods in place of the struts. This is how guys are blowing them. You want to set them stiff enough to eliminate roll, but soft enough so you can blast over railroad tracks. These coilovers can do that.
I've had mine almost a year. There is ALOT of adjustability, as RRE says, this can be a good thing or a bad thing.