I just got the current model of the Lightning 2 UL to use for bike touring. I haven't been out on the bike yet with it, but have slept two nights in the backyard. It is very easy to setup, a "comfortably cozy" 2-person, very roomy 1-person tent, with lots of sit-up room. I like the hybrid double / single wall design in how it does reduce the overall weight, and simplify the setup / take-down of the tent.

Because of two integrated awning poles, it is easier to just roll the tent and use the provided stuff-sack, so it is pretty close to the 6 x 16 advertised packed size. You could remove those awning poles / reinsert them, if you wish to try a compression stuff sack instead. The design of the dual vestibules is also interesting. While I appreciate the intent of providing for more direct ventilation (front to back), I'll need to get used to accessing my gear from the sides of the tent, versus via the entrance directly. I'm looking forward to my first trips this summer!

Sierra Designs Lightning 2-Person Ultralight Backpacking Tent

This is currently on sale at REI for $269.99.
Sierra Designs Lightning 2 UL Tent - Free Shipping at REI.com