For the music you've said you'll be playing, I suspect that the 115 will suit your needs better. A 2x10 cabinet will more than likely have more high end frequency response, but for boom and bass, the 115 will definitely win.
The ABM cabs are generally held in higher regard than the MAG lines, although you might find you prefer the sound of one over the other. Ideally you'd be able to try both out, side by side, but alas, this isn't always possible!