I used a very "cheap" "organza" fabric for my first quilt's baffles, it weighed roughly the same as "nanoseeum" and mostly cost me about the same once gas was factored in.
That quilt is still going strong today as Neon's 3-season quilt, but sewing the organza was a totaI PITA. I had to fold and press the sides 1/4" before sewing. With no-see-um or nano-see-um mesh, it's not necessary, since the fabric doesn't unravel.
Here's a pic of Neon: