If I had to pick one, would go for great helm but medieval helms are overrated:

It’s frog helmet, my dudes.

Sallet is rad

For what type of battle? I'm not gonna choose a frogmouth for daily battle. But also I won't choose a bascinet for jousting.

My 7yo says kettle helm is best. I'd probably go sallet

Hounskull looks like a plague doctor switched classes to DPS

For looking at (with someone else wearing it) I choose hounskull. If I have to wear one I'm going to want to see so I'm picking the deeply uncool kettle.

I feel like the Frog Mouth guys I'm Dark Souls are the scariest

Edit: in not I'm

If I had a Hounskull, I could pretend to be a giant bird and peck at the local villagers.

That supposed Spangenhelm is a Vendel era northern ridge helm though. The difference is the titular ridge over the top.

Either Barbute or Great helm

Kettlebois, assemble!

I like the Frog mouth best!

If my opponent is using a hammer, I'll go helmetless. Not like it would help anyway.

Spangenhelm! Duh. How has nobody else chosen it yet?

I like the look of the barbute the best

Morion

Solaires great helm of course! Praise the fahckin sun brah