Ill start the can of worms you just opened

Safety is a given and we can all imagine but no one really gonna change your mind on this so it is what it is.
I went with a flip up after having a try full face and dont think Ill ever go back.
Flip ups are noisier than traditional full face but not by much. My Arai was louder than my Shoei for sure. With the fliped up part up I get some buffeting and it catches the wind. There are some that are designed to flip further back (Shark I think).
I went with Shoei Multitech because it felt right but have recently tried on a Nolan N104 and wow... visibility is amazing. I need to put one on for a while and see how it feels. I may switch.
The convenience of a flip up is minimal but still nice. For a fast gas up and a quick drink or water or to pull over and have a quick conversation without having to remove the lid is nice.
The flip up tend to have some extra room at the ear for headsets/glasses. I wear sunglasses when I ride due to light sensitivity. No issues for me.
I like to research products before buying and the best resource out there is webbikeworld.com. Seem like they have reviewed just about everything out there.
If you do get a full face or flip up I think they all come with the Pinlock option now but look for it. Works like a champ. Your glasses will still fog but not your visor.