I got the smarty cuz there was a deal on it for catcher owners. If your interested in mileage they say the fuel saver program works well. I say if you dont plan on cutting back on power just enjoy what you have. I tried a couple different programs (about 20 minutes all told),before putting it on #8 to go with my Quadzilla box. Haven't looked back since, cept to watch idiots choke on smoke.