Well, you all talked me out of ordering a Big Sky Evolution 2P:
http://www.backpackinglight.com/cgi-bin/backpackinglight/xdpy/forum_thread/4250/index.html
Now, what would be on your short list for alternatives? Reading some of the reviews of single wall shelters has me a bit concerned about what would happen in a heavy rain. Likewise, the reviews of some of the floored, tarp-like designs indicate problems (again with heavy rain) if the tent is not pitched just so.

