Originally Posted by
Carbonfiberboy
All above about saddle-BB relationship being correct, it's also true that as one increases lever arm, force to provide a given torque decreases. Thus yes, a longer stem also reduces hand pressure. A good metric for reach is to have ~90° angle between upper arm and upper torso.
I'm still uncertain of the best way to determine saddle fore-aft position.
I have used KOPS as a starting point, but have also read that it's really your balance point that's the important thing. The actual position of the saddle with respect to the BB is determined by the combination of factors such as length (femur) length, torso and arm length.
It's all a bit confusing for a newbie!