Rotora Break Kit for E53 - 4.8is (Rotors/Pads/etc)

[BMW-x5-48is]

Hey Guys,

I found a break kit for the 4.8is - similar to BREMBO. I have choice of rotor sizes which the rep said will fit the stock wheels on the car. (20 Inch).

Which package should I go with:

SETUP #1:
Front 6-piston/355x35mm (drilled)
Rear 4-piston/355x32mm (drilled)

SETUP #2:
Front forged 6pot/380x35mm 2-piece float type disc system (drilled)
Rear forged 4pot/380x32mm 2-piece float type disc system (drilled)


The price difference between the two systems is $900 bucks.. So if any of you know your stuff about breaks please let me know which setup I should go with.. #1 ? or #2?

Do you guys think setup #2 will fit on the Rims?? the rep is saying yes but I am wondering.... Its just $900 difference between the two.. Please any advice??