I am sure this has been covered but I didn't find anything recent but wanted to see the thoughts out there.
I prefer the transition point from the front of the brim being turned down to the back being turned up somewhere at the middle of the ribbon bow or slightly behind it (right above my ear). I've seen some with it way forward of the bow & it seems to block one of the beauties of a hat, the ribbon treatment & where pins are usually placed.
I also prefer the back to be subtley turned up, almost like a pencil curl & not a full snap of the brim.
Here is an example with the new Stetson Sovereign Roadmaster that I just received. No comments on the feathers, they have already left!
Other thoughts & preferences???