Something like this maybe? http://www.sierradesigns.com/p-293-light-year-1.aspx I have a 2 man Sierra Designs tent i like. I suspect they make tents for the REI brand, or more likely they both use the same manufacturer.

I've been considering a bivy like this http://www.campmor.com/outdoor/gear/Product___91061 The prospect of waking up with a bear snout in your face though... and you can feel mice running over the top of your bag at night.. and if it rains heavily...