If we are talking about a stock set-up, street driven, you can't beat the six pack for driveability (cold start, road manners, mpg, and power). The factory dual quad setups are cold natured and tend to use more fuel, wot is great however.

When you start talking about after market intakes, carb options etc; sure you can out perform stock set-ups, and loose drivability in exchange for performance "sometimes".

In stock trim I prefer the sixpack, I have two currently and plan on adding a third. I was also planning on adding a crossram setup but it was for a road trip car and I've been thinking twice with fuel cost what they are.

I get 16.5 mpg if I drive sane with 3:54s in my GTX. I have heard 11 mpg with the 440 crossram.