This is an interesting topic! The lower "racing" position isn't just for aerodynamic reasons. The fact of the matter is that with a lower position you are able to engage your glutious maximus muscles/ get more power. /More upright, not so much. I am not advocating a lower/ racing position. I do believe in being upright enough that your hands do not hurt form long hours on the bike. I watch a lot of the wheels 2 wander (bike touring) videos on you tube and they are really upright, and seem happy with that position. It really comes down to your personnel preference.