Since I already have three SD cards from Transcend, it was not a difficult decision to choose the brand for me. However far I had only the 10 class. The speed was OK, enough perfect for Full HD recordings of AVCHD itself with 28Mbps (Sony NEX VG20). But an import or backup on PC has just lasted a bit long. Well, and that's why I have an SD card've searched that can read a little faster. Interestingly, this card is currently even cheaper (about 13 EUR) than the standard version. So for the price I have the card without hesitation ordered immediately.
The figures speak for themselves (see customer photos). An import has now become fact, twice as fast as before. Had no compatibility issues.