If you happen to have $295+ to spend, perhaps you might be interested in Mountain Laurel Designs new tent - the Cricket (http://www.mountainlaureldesigns.com/shop/product_info.php?cPath=47&products_id=174). MLD introduced the Cricket at the same time they introduced a new solo Trailstar tarp ($155/10.8oz in silnylon, 7.5 oz or 5.8 oz in two grades of cuben fiber).
The Cricket represents MLD's first move towards a lightweight tent and accomplishes it nicely with a silnylon option coming in at 19.5 oz and a cuben option at 13.5 oz. Both are essentially an outer fly with inner net tent which clips to the fly. This modular design means you can use separately the fly, the inner net tent, or both together. This seems to be the most common way I've seen lightweight tents manufactured lately Add another $150 for cuben. The specs on MLD's site aren't too telling right now as all details haven't been posted, so I can't provide headroom, length, etc. Regardless, owning several MLD products myself, I have no doubt it will be well engineered, well made, and more importantly...a real possiblity for many lightweight backpackers looking for greater protection from the elements.