When I looked into this about year ago, I found the following:

Dynamic: Bare aluminum, maximum height 78 mm from fork locknut to top of stem allen bolt (measured along vertical neck of stem), ~427 grams
Technomic: Bare aluminum, maximum height 160 mm above fork locknut, ~300 grams
Deluxe: Anodized and nicer finishing overall, maximum height 120 mm above fork locknut

I also didn't need the height of the Technomic, and eventually found a used Deluxe that was cheaper than any of the models new.