We bought a Thule Sidekick and used it on a 3 week camping trip out west last summer. Plenty of room for two three person tents, canopy, 3 collapsible chairs(in bags), and assorted smaller gear. Drove through a couple of heavy rains in the mid-west, with no water intrusion. Very happy with it. Pic's can be seen here. Scroll down
http://forums.genvibe.com/zerothread?id=34035or just go to the GenVibe garage and look under the "Team Envy" postings.Cheers!