I have been using the Sandisk Ultra 64gb Class 10 in both my Notes.. No problems. The point is, could my two Notes notice the extra speed of the Extreme over the Ultra? I think not, just an opinion, and before I spend TWICE as much something, I want to know if I will get TWICE the performance.
No doubt the Extreme is faster, but, I have no issues with the two Ultras.. There is a BIG price difference from the Ultra to the Extreme.. Almost twice the cost...
Samsung Galaxy Note 10.1/2014/32gb/Black
Samsung Galxay Note 3/32gb/Black
Samsung Galaxy Gear 2 Silver/Black
74, old, dirty and fast!!