The quote about Good securing the device, instead of the apps or data, is kinda funny. The folks at Good would deny this vehemently, and say exactly the same thing about someone else. This is an ongoing game in the mobile device management market; for the last couple years, almost every player has tried to claim "we secure your data and apps, but other products only secure your device," in an attempt at differentiation.
I don't know much about Better, but Good has an excellent reputation, certainly for iOS devices. That said, these pure-play device management firms might get pushed into niche/specialty territory soon, since big players like Microsoft are investing more and more in device and data management tools.