The top left diagram has a nice Friday the 13th vibe going on. That would be my choice.
I think I was watching MTV Cribs and they had some motocross star on there. Travis Pastrana I think. The only thing I remember from the episode is seeing a room filled with helmets. On the walls, on the floor on the desks. Like everywhere. And he said they were his helmets that he's crashed in. He crashed once in them and got a new helmet but saved the old ones.
Ever since then that's all I can remember about bike safety. Bang your head once, time for a new helmet.
Something to keep in mind if you DO buy a high priced, reputable brand name helmet....some have crash replacement programs where they will offer a discount on another of theirs if you qualify (time, receipt, registered etc)