need help choosing springs

hey i have a 03 330ci it has the whole sports pack thing i dunno if that matters, but i want to lower my car. so i was going to get the Hamp;R springs but i heard that it wears out the stock shocks. so i have been looking at the UUC springs and im leaning towards them, but im not sure i just wanna know if anyone knows about either or any tips...
thanks