Yeah, I have a big head too (7 3/8).
Last year when I had my 1st get off while underway in some 30 years (slow, but hard), some of my slide was only on my head. My favorite helmet ever (Scorpion) was seriously trashed, and they stopped making it.
I have a row of old helmets on a shelf in my bike shed (going back a long time). Most are not a good fit. A couple are still good. And a couple 3/4 helmets for colder weather.
I now only wear good DOT halfs, but they need to have a zip off neck curtain for colder weather, and a bill, and I like the little shorty internal flip down sun visors (mostly to keep my prescription glasses clean in rain).
My current Bell Pit Boss.

I bought a red, wildly painted dragon head full face helmet a few years ago, but those things always give me claustrophobia. So I've only ever worn it twice, in the cold.
Something like this: