Welcome to the forums and good luck hunting down the perfect Airstream for you!
If you have searched around awhile then you know this forum has a great deal of information to offer! If you haven't used the search tool in the blue tool bar, give it a try... it will offer up threads that have your search word as a topic...
If you are still looking for the perfect for you airstream... you might check out this thread. It has lots of interesting things to consider whether you are looking for vintage or brand new! Read through all the pages, or at least scan through them!
Good luck and welcome! Be sure and let us all know when you find your 'stream!
Mrs. NorCal Bambi (traveling in S Tardis)