Bilstein Or L-tuned Shocks?

[vanzant78]

I have 18" wheels w 245/40 tires and am getting the eibach springs for my gs300 because I dont like the large gap. Ive never got springs or shocks for a car and wondered if anyone knew the differences between Bilstein(german) and L-tuned shocks. How do they compare in performance and price? Also when you get new prings why is it neccessary to change the shocks? Any info is helpful, as well as the best places to buy these, Thanks!