I have a vinyl backdrop. I work for an industrial fabric company so I just had them make up a sheet about 10' wide by 12' long. I used a low reflective white vinyl called vin-a-sign (or something like that). It's the same material they use to make signs.
The material comes in roll that are only about 60" wide, so they had to weld two widths together, creating a seam...but it doesn't show up in photos.
The white vinyl background looks & work pretty well, although after a bit of use (rolling & unrolling, folding etc) it's not perfectly smooth anymore. It still looks good when lit properly though. It also gets dirty, and doesn't clean too easily.
It would be a great choice for a studio, but I take it on location many times, and it's not ideal for that.