Mike, I am not arguing with what Extralite say as the best would alsways be the correct size frame so that the saddle is in the middle and the seatpost is inline. However I fail to see the mechanical difference of a seat on inline post pushed right back and a layback post with the seat in the middle. Mechanically as regards cornering and climbing traction they are identical (I admit the physics on the seatpost are dfferent!)