In general, I'm unimpressed with cycling brakes.
They all seem to be uniformly weak.
In the real world, motor vehicles have brakes sized to accommodate the weight.
In the cycling world, we are stuck in the one-size-fits-all mentality.

That said, I have bikes with road calipers, linear-pull (v-brakes), and cantilevers, and the best improvement I've made on all of them is KoolStop salmon pads.