While I typically only shoot with backdrops in my studio I have been asked to do some head shots on location. Currently I have worked with canvas, seamless paper and sheets (they were cheap when starting), so I am familiar with that. When doing on location shoots what typically works best as a balance between style, ease of set up, ease of transport and of course cost? I am looking at something in a medium grey. I do like seamless, but how well does it hold up to transport? I have not worked with vinyl/plastic style back drops, are they any good for this? Of course there is the traditional fabrics but you would need to make sure there is a way to get the wrinkles out. How are the ones that "pop" open like a reflector? Is there an option I am missing?