Stem Stiffnesses

Al_38 Posts: 277
edited September 2008 in Workshop
Was wondering if it is possible to notice the difference in the stiffnesses of different stems of the same length. I'm interested in the deda zero 100 ... m-317.html and the deda mag00 ... m-317.html (to run with a pair of deda spectrum bars). Does anyone have any experience with either of these stems?