This frame is one of my more popular styles. The 7005 aluminum provides a very quick response to the pedals while the carbon seatstay keeps the ride from being too rough. My newest personal road bike is very similar to this one. The long head tube is to accomodate a higher handlebar position in accordance with the customer's instructions. I feel that most cycling related body ailments can be traced to the handlebars being too low, too close or both.