I've heard the Scarp 1 has plenty of room, and the dimensions seem to confirm this. I chose the 2-person version because I'll often have another person with me.

The Scarp 1 is in production. I think tents with the 2010 mods have already shipped, but sold out and a new run is being done.

Henry Shires keeps his customers will informed about what's going on. Very impressive!

See this status page:
http://www.tarptent.com/ordering.html