eelnoraa
Contributor
... the ultras (class10) have some pretty significant quality issues. Quality control appears to have just been plum absent.
This is definitely a true statement. Even SanDisk internal people know this. This card also has lots of issue with Samsung Galaxy S3 phone. As far as I know, the issue is that SanDisk uses a different controller for this card, which is design by their Isreal team. The new extreme went back to a US in house design controller, which is similar to the one used in older extreme and extreme pro. The quality should be good. But the damage is done, it will take SanDisk a while to bring back their reputation if the new extreme really turn out to be a high quality product.