I have a '12 with a 22" Madstad. At 5' 10" this is about right, never fully extended since I want to look over the bug catcher.
as you said it is very personal, I love/hate it. Love because it does what I really want, keeping the direct blast of air away from me.
Hate because there is no quiet space behind it. There is enough air flowing under it between the cowling and the mounting brackets to reduce that back pressure felt with some screens but it also becomes a bit noisy. Ear plugs are a wise addition. Bottom line....you never know until you plunk down the green. Good luck with your choice.