I really close to pulling the trigger on a tuner and would like some opinions from people who have actually ran a couple of the tuners listed in the title for comparison to each other. I won't be pulling or racing just looking to get the EPA crap off & make the truck more efficient (better mileage & drivability). I tow off and on in the summer and like the thought of being able to shift the tunes back and forth with a push of a button (H&S) but more people seem to like the Spartan???? Everything I've read about gearhead seems to be great (smooth shifting, low smoke)so I'm leaning towards their tunes on the H&S platform. So, what's everyones opinions? I would really like to hear from someone who has had Spartan & Gearhead tunes to see which they prefered and why? Thanks in advance & please no bashing. Just would like some honest opinions from people who have had experience with these.