What is the best MicroSD card to bye Sandisk ultra or Sandisk extreme?

[Skov]

I have looked at: 

SANDISK MICROSDXC ULTRA CLASS 64GB with read/ wirite of 30 MB/s

and SANDISK MICROSDXC EXTREME UHS 64 GB with read 80MB/s wirite 50MB/s

Does this make an differnece, on my experia z1 ? Does z1 support the high speed ?  

[rency_07_22]

Hi. Current UHS-1 standard is way better than Class 10. I'm now using a Sandisk Ultra 64GB microSDXC UHS-1 and no problems I'm encountering with the read/write speeds.