MicrostockGroup

There is also the Lastolite Hi-lite to consider.

http://www.lastolite.com/hilite-backgrounds.php

You should read a few of Zack Arias's posts on shooting on white.  Very, very good reading.   I added several links to him on one blog post: 

http://microstockjunction.com/2008/05/09/zack-arias-on-shooting-on-white-seamless.aspx

I think I've got the lighting covered, and I know I can hide the texture of the material by properly overexposing the background.  I'm still not sure of any advantages of paper over something else?  Wrinkles?  Ease of tear down after a shoot?  Re-use?

I've seen Zack's blog posts on shooting with a white background, and they are indeed excellent and very educational reading.  And he uses paper, a nine-foot wide roll of paper (a bit less than 3m).  Such a roll of paper does not lend itself to portability if you have to set up your equipment "somewhere else."  This is something that I need to do from time to time.

Why not just have both, paper is good for a static location and if you are in an environment where dirt will get transfered to the trailing background like a converted garage and then you just waste the last 2 metres on each shoot.

I have two supermarket budget ($14 Each) kingsize "Flat White Bed Sheets" sewn together, nice and cheap fold away and transportable fit on the background frame well, if I am shooting at my daughters then I take the portable stands in the car trunk, and we iron the sheets before use, and they are affordable in different colors as well.

David