I change up my armor constantly, but a fun thing I like to do is match the visor with the armor in a way that the flavor text makes sense. For example with Dynast armor, it's supposed to be resilient and the helmet is "fantastically durable" which means obviously the best choice is the Unbreakable visor. Then I'll match the armor colors to the visor I picked.
That's my basic process for whatever I wear, and it's kind of fun. Because I'm bored, I'll list some other examples of combinations that I wear sometimes, that I think make sense based on flavor text:
Shinobi armor+Dianthus visor, because apparently the UNSC just found them
Helioskrill armor+Clockwork visor, because they're works of art
Cinder armor+Ichor visor, because Cinder armor is all about incinerating biohazards, apparently
Recruit armor+Aureus visor, because they're both for new Spartans
Mark IV gen1 armor+Primeval visor, because it's old stuff
I opened a gold pack. Black and red looks cool.
This is probably 99% of people