who's running a supercharger?

[H2 Passion]

Hi,

i want more acceleration, increase the torque and HP power. Many times, i am the target of many X5 BMW and Cayenne, so i want to bypass them in acceleration and high way speed.
No speed limit where i live and we have a lot of mountains. (outside US).

i can see 3 main types: Vortec, Whipple and Magma.

Vortec: Increase your horsepower from 316 to 436 and torque from 360 lb./ft. to 465 lb./ft
Vortec

Magna: 63-125% more horsepower (from 2,000 rpm to 6,000 rpm) what about the torque?
Magma


and the Whipple: Up to 50% horsepower increase
Up to 50% torque increase throughout entire RPM range. Whipple SC Whipple

Which one do you advise me to buy and why??
i want it for outside US.

Regards
Elie