I used an Integral Designs Salathe for several years with no problems; it weighed two pounds, though that was lighter than the 4 and 5 pound tents that were the lightest available at the time. I'd still be using it with a tarp, if they didn't now make a tent that was better ventilated, more convenient, and lighter (Hubba and, better, the Carbon Reflex 1.)

I also used REI's Minimalist - weighs just under a pound, costs $100, has bug mesh. Only drawback is, as I recall, there is no rain flap over the face, so you'd have to use a small silnylon tarp with it (5x8, maybe half a pound?)