I've looked on the forums and I never really see a finite answer.

I'm going to buy one of them (I know I can make it cheaper, but I want it to fit right, dont have the time, etcc).

I'm planning on getting the overkill tune and already have the magnaflow catback exhaust. I will be getting DT headers at some point in the not-so-distant future.

Which one is right for me?

The K&N aircharger?

Or something like this...

Pontiac Grand Prix GXP 2006 - CAI Air Intake System

Thanks ahead of time.