They are very powerfull! a car park test of a privateer bike blew my mind, he wasn't sponsored by them but claimed them to be the best brakes, another expert rider I've met running them in a bikepark told me he's selling his and moving back to shimano, claiming he had too many issues but he wasn't more specific, my next purchase for my trail bike is zee because most my fleet run shimano and I prefer to cart just one set of brake spares and bleed kit about, otherwise I would get them for my DH and move the Saints to my trail bike. The price point was also an issue and that is what this new product is addressing but I am responding to your question before researching the new price point so you'll have to see yourself
@oldfaith: I've had some and they were complete trash. They had no power and always made noise/squeaked (Even after bleeding them and getting new pads) So im never getting them again.