I have a modified stage 3 SRT-4 and an SRT-6. Love them both, but for handling and braking "out of the box", the SRT6 wins. Gas mileage though, the SRT4 wins... (25 mpg mixed town/freeway) ... From a roll, they pretty much are dead even with the SRT-4 gaining on the top end due to Stage 3, 23 lbs of boost with an AGP wastegate, 3" exhaust, and less weight. Sex appeal definitely goes to the SRT-6. Hauling kids and lumber goes to the SRT-4... You can never get it all in one vehicle.