The most popular tent I've seen on the trail this year is the Tarptent (www.tarptent.com), followed closely by the Europa (www.sixmoondesigns.com) . The Europa is a true tent, and the Tarptent with a sewn in floor very close. The Europa is most likely the lightest "real" tent available. (This is an unscientific observation and excludes tarps.) AsABat