Which is better SanDisk Ultra or extreme?

Related questions

1. What does u3 mean on SD cards?
2. What is a Class 4 Micro SD card?
3. Will SDXC work in SDHC slot?
4. Is SDHC faster than Sdxc?
5. Is u3 better than u1?
6. What is class in micro SD card?
7. Which is faster u1 or u3?
8. What is the difference between a Class 4 and Class 10 micro SD card?
9. What is a Class 10 SD card?
10. Is a USB flash drive faster than a SD card?

Tags

1. #writer
2. #reading
3. #little
4. #ultra
5. #speed
6. #128gb
7. #sandisk
8. #write
9. #specified
10. #extreme
11. #expensive
12. #minimum
13. #faster