the inverted coils are junk for daily driving. My brother has the inverted ones and they lasted him 20,000 miles before 3 of 4 blew out. He never got to even track the car.
They are a more aggressive style coilover and will not last as long.
The standard BC coilovers are going over 40,000 miles. I couldn't see myself spending 200 dollars more on something that lasts half as long

My brothers car rode a whole lot stiffer than mine on similar settings.
How many miles did you get out of yours?
What kind of grease do they want you to pack it with? Anything specific? Maybe I can talk my brother into trying this.