Well, having compared a SuperChips to a Predator on a friend's 5.7L powered Ram, and having one installed on my Chrysler; I'd say the flexibility, program features and added power favor the Predator over the SuperChips unit. And, I believe the price difference is made up with those differences.
I've delved deep into the workings of the Predator and have one on my 2006 Chrysler 300C SRT8. With the ability to select different octane value tunes, adding fuel to a lean running engine, set spark and WOT knock retard settings, loading custom tunes from a tuner or having a CMR tune done and kept on the tool, the flexibility of the Predator far and away outshines the canned tunes available on other units.
I have managed to increase my RWHP from a dyno measured 368 HP to 404 HP...and I have a bit more tuning to do. This is was done on a stock engine. The only mods outside of the tune is a cold air intake and Magnaflow exhaust. No engine internals have been touched.
So, I say Predator...but then again, what do I know?