I don't find bugs to be a problem in Ca that a head net and a little DEET can't solve, even in the Sierras in June and July. So for me the plain zPacks Hexamid Solo is perfect at around 4 oz. I also have the zPacks poncho/ground sheet, which I don't always use with the shelter.
Another option that is not too expensive is the Six Moons Wild Oasis. Under 15 oz, and has a bug net perimeter and a full zipper. I have one of those too.
The Skyscape X looks interesting if you can handle the cost :)
Don't have any experience with their UL shelters, but take a look at Mountain Laurel Designs and Tarp Tent. Both make excellent products and have a great reputation for quality and customer service.