I had a Transcend 16gb class 10 from play.com lasted from November until about June... constant use in my pioneer head unit (SD) and it just stopped reading, would not format or even be recognised on my computer, so was going to just buy another then decided to RMA it under warranty back to play.com, just received my refund today and now have gone for
http://www.play.com/Electronics/Ele...-Endorsed-By-National-Geographic/Product.html
Ive had a micro SD do the same not even recognise in my computer, im just glad its music and nothing important as i would not be able to retrieve the data back myself if it happened again... Hoping the PNY is slightly more reliable, but the only thing i will rely on is the warranty tbh and backing up myself...
SanDisk extreme is what i use in my DSLR and that cards been fine for ages so i hope its reliable as i think it is, ive gone off Transcend as both failure cards where by them..