micro sd cards

[Rroff]

SanDisk cards are actually the slowest cards out there according to my limited personal experience.

Depends on your usage - and other people's results might be different to mine - I find them very good for burst data i.e. if you take a high resolution photo but don't seem to hold up as well for general file transfers or recording of high resolution video, etc.

EDIT: Though they have a few different models designed for different applications and the ones I've had most experience of are the extremes.

 

[Feek]

I've used three or four different types in Raspberry Pis, SanDisk are by far the quickest. I was surprised how noticeable the difference actually is. I appreciate that's not in device that's being discussed specifically here, just my thoughts.

 

[MichaelAwkward]

But were they all equivalent specification?

 

[Tysonator]

I now only buy sandisk extreme as they are fast enough for high fps bursts, HD 1080, and even 4k.
There is the extreme pro which is wven better, however it is a lot more money !