Willwood BBK vs ECS Tuning 135i BBK - pros and cons

I have 1997, 2.8 roadster with ACS 3piece wheels, which look great but I want to finish the look with BBK. I am not tracking my car, mostly it is for aesthetics, but at the same time I an interested in some performance.



Can you please help me decide between these:

ECS 6-Piston front BBK with yellow "BMW Performance" calipers

http://ift.tt/1EqyMot



Revolution Brake LLC BBK

Forged Wilwood DPO6 Aluminum 6 piston Calipers

http://ift.tt/1EqyMox



They also have BBK with 4-piston willwood forged dynalite calipers and they claim that they weight only 2.5 lbs each.

http://ift.tt/1uTVZja



Any opinions on these to help me decide which ones are the best for me? I believe bmw performance calipers would look more effective, but on the other side Willwood calipers are much, much more lighter (weight of bmw performance is around 10 lbs each). Also what about 4pot vs 6pot? I will leave stock rear brakes (as there are no "plug and play" options to improve them) and 6 pot might influence braking bias more than 4pot. But I am not sure if that is so important on the street.

Willwood BBK vs ECS Tuning 135i BBK - pros and cons