661 dirt lid or mullet helmet?

Hey guys! I’m getting my KH 24 inch MUni on Monday and to ride in the mountains, I’m being forced to wear a helmet. So I was looking at sixsixones helmet deals when I stumbled across the dirt lid and the mullet. People tell me to buy the dirt lid because it’s sleeker and protects your noggin better. I want to know out of these two helmets, or any other helmet for under 30$, which is the best in looks, comfort, ventilation, and weight. I’m kinda leaning towards the mullet but I want first hand reviews to back your answer up so by tomorrow I will have a solid choice. Oh and also, I have kinda a huge and I reAlly mean that head. So sizing shouldn’t be a problem correct?
Thanks!

Thomas