Question about boot flex: how exactly does one know if the flex in their boots is right? I understand the generalities that stiffer flex provides more power and precision up to a point, but when is too much too much? I just went from a Rossi Power 9.3, flex maybe 90-100, up to a Head Vector 120, flex 120, b/c it's the boot that we could best fit for me. Of course it can be softened, but I don't want to go down that road too soon. I have yet to ski these extensively, but I'm interested in how I might start thinking about whether flex is right or not.
How does one know flex is right?
How does one know flex is too stiff?
What are the advantages/disadvantages of stiffer flex?