We have used the On the Go softener for five years, 1000 nights camping, works good. I don't think there's much difference in brands, softening is a real simple process. Buy the one on sale, that's what we did.
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts