Originally Posted by
Up North
FYI - if you like the Emonda it is available in H2 fit which is more endurance than speed which is H1 fit. You can check out the geometry of both on Trek's website. It boils down to size of head tube - H2 longer head tube than H1.
If longer HT is all it is, that's pretty...well, weak. The thing about stack is that all you need is some combo of longer steerer, spacers, or higher rise stem.
If all Trek is varying between the two geometries is stack, that's purely cosmetics (the irony being that fewer spacers supposedly looks racier, but racers do it to get into a more aggressive position, the opposite of what a taller HT does).