Those cheap mosquito head nets work fine, but they can be hot to hike in during the summer months (ie. when the bugs are actually active). If you just want to use it in camp, you can't really go wrong as they are all pretty much the same (at least the ones that I've seen).
But, I also recommend the simBLISSity UL bug net and not because its a hair lighter (though that helps). The hole size isn't really good for no-seeums, but against mosquitos works very well and the important thing, it's cooler then the standard heavier head nets due to the larger mesh size and it doesn't block your vision as much.