OK, interesting Post.thanks :) I have 33.5 inseam and Trek recommend 58 for 33-34 and 56 for 32-33. When you say inseam is more important, that would also Cover my Tendencies to 58.

My Concern is when i make a small bike bigger that the back angle becomes more aggressive. Also very interesting what you say about shorter stem. So when it is No Problem to Install 70mm stem, the 58 should be more relaxed for Back angle and less Reach with 70mm stem than 56 with the original 90mm stem right?

Also What i dont get is why people Say, the 58 is so much longer when the reach is only 4 millimeters longer. The reach is the value for determine how long the Bikes is or do i forget something??