Re:
As I edited a I've, you get a solid feeling brake. All the brake power needs to come from your grip and not the lever. You get a firm feel, which many people think as a good brake, it's not and probably why many think canti brakes as shite.
Get a nice soft, controllable setup with easily delivered power.
some may call this spongy, but it the proper setup for decent brakes.
It's a different spongy to really cheap flexible brakes, which I think is where they think spongy is bad...
If the stays are not bending with ease, then there is something wrong with your setup ;-)