Lisa,
I carried a cheap headnet I got at WalMart (about $1) on our AT thru hike in '02. In MA I could have sold it for ten times that amount to some other hikers. I plan on taking it this year on the JMT. Flame has one just like mine but doesn’t like it for the reasons Yogi mentioned. I guess you can just try them out and pick one.
I don’t go in the woods with out mine. I wore it in MA and CT almost every day. When it was hot and there were lots of nats, I put it on. If I didn’t, I would be picking bugs out of my eyes constantly. The net has an elastic ring at the bottom and I could just pull it up on my head and it would ride like a stocking cap. Very handy. When to bugs were out, I just pulled it down. It weighs nothing.
Good luck on your hike, Flame, Sunrise and I are starting the JMT on August the 27th or 28th depending on transportation. Happy Trails
Papa Smurfc