For what its worth, I have the AEV/Magnuson Supercharger, and I love it. Zero check engine lights, and factory level of drivability. Turbos are great, but how will that help you off road when your below RPMs to develop boost? I get boost from 1500rpm all the way to 4500 rpm when it begins to drop off a bit. I also live in Colorado where I need the power on the highway etc, but at least with a supercharger, you also benefit with useable power off road. Turbos can be a great option, but many people think its "free power" and that's false. Turbos also significantly raise underhood temps, and if you do a bit of homework on your TIPM (your underhood fusebox) they don't react very well to overheating, and it will render your Jeep useless if it fails. Both Turbocharging, and Supercharging will affect your mileage, and if mileage is your goal, then neither will help in that department.