Just towed with my P3 for the first time after replacing the cheap unit installed by the RV dealer. It's definitely worth the money... something I haven't been able to say about anything else I have bought in the RV industry. I set mine on 6, and increased it to 6.5 with boost 2, per the instructions. Unless I upgrade the trailer to something heavier, I probably won't have to do anything else... works perfectly... Much easier than the old one.
J & D in Lovely Weatherford, TX
2016 Jayco White Hawk 28DSBH TT
2014 Ram 2500 Crew Cab 4X4 6.7L Cummins