Anyone who is looking for a fast micro SDHC/XC card should look at the Lexar 633x series as it is one of the best options on the market. The performance in our tests was really good considering it is "only" a micro SD card.
High performance; Backward compatible with slower readers; Available up to 128GB; Added USB 3.0 reader; Flawless work on various devices
There are really no cons worth to mention but price could be always lower