Johan N.wrote a review of Sierra Designs Lightning HT 4 Footprint on June 29, 2013
Familiarity: I've used it once or twice and have initial impressions
Awesome: I love that you can leave it attached to the inner tent. It makes set up and brake down a little bit easier. I clicked it into the tent and haven't taken it off since.
Sucks: Over $50 for a piece of plastic tarp... really.