The Lexar brand is used by professional photographers, in fact, the data need to be written in record time (in order to take another photo) and reliability must be at the rendezvous.
Speed, reliability, friends photographers have understood.
Used in a pro surface 2 128GB This map shows 59GO available.
The writing speed is about 15MB / s.
The card is incredibly small.
I am fully satisfied with this microSD, to do with time.