Originally Posted by blakcloud

What is good about the flat mount and the shape of the disc calipers is now you can tuck them on the chain stay behind the seat stay. This is the perfect place for a commuter bike. Having disk brakes on the seat stay was a pain at best. Few years back when they were on the chain stay, many manufactures had to bend the seat stays around the brake which always looked wonky or they had these long swoopy dropouts to accommodate the disc brake. The new style is much more elegant.