I bought one of these on a recent trip to America as I needed it 'Now' not when I got home.
It is a wonderful card. It was for a GoPro camera and it is like having an F1 Car inside!
FANTASTIC product, and ultra fast record speed.
Read speed doesn't matter at all, its how fast it puts data ON that counts, and this card does it rapidly.
I've been a user of Sandisk cards for a long time, ALL of them are great products, a bit expensive but you do really get what you pay for.
Good Quality equals money!
Go buy one today :-)