Ha . . . I posted right behind you in the other thread, so I'll put this here so it will make sense. . .

As for white backgrounds, I'm working on something portable based off of the videos and tutorials offered by Zack Arias. He has a series of nine posts so far and I expect more.

http://www.zarias.com/?cat=13

The tile board seems ideal for studio work. I think it would be easy to clean & shine up, and if it gets totally trashed, it is cheap enough.

If I can find something with similar properties as far as reflection that is portable I'd be thrilled. So far, the closest suggestion is Vinyl, but it is hard to find plain white with no patterns or textures.