I did not know the PNY brand. When it comes back up valuable data, we usually like a reliable brand well known ... I tend to prefer the 'recognized quality' (and often a higher price that comes with it) so I was a little skeptical at fairly low price for a 16 GB SD card and an unknown brand in my case. But I was wrong, because the card works perfectly. I'm not a pro in the field, so I could not tell you the speed of stories, reading or writing to the card, but it has been tested on a Mac, a Sony camera and a Samsung phone and it works no problem.