I have my doubts on some of the reviews on the rebranded Amazon ones, but I have been looking at the reviews for at least one "Verified Purchase" review.
I think I've settled on this one: http://www.amazon.com/Uniify-UV002-Verge-Compatible-Cardboard/dp/B01EYB1AGS?ie=UTF8&psc=1&redirect=true&ref_=od_aui_detailpages00
As for why there are so many rebrandings.. it seems that BoboVR is an OEM, and they resell to others who then sell them.
*edit: whoops, linked aliexpress again.