What features of the Ridley Fenix make it a top choice for professional riders, and how do its design elements, such as the internal cable routing and dropped seat stays, contribute to its performance and comfort? Considering the Fenixs versatility in handling various road conditions and terrain, what specific technologies or innovations set it apart from other high-end road bikes, and how do these features enhance the overall riding experience? Furthermore, how does the Fenixs frame design balance stiffness and compliance, and what are the key benefits of its unique blend of carbon fiber and other materials?