And to take that one step deeper, I was more concerned about the write speed of the card(which they sometimes don't even disclose on the box) as that should be more important if trying to record large files, photos or video, compared to read speeds, which is what affects pulling up your gallery to look at the photos you've already taken.
In my thinking, I don't want to miss photos/video while my device is trying to write to the card.
I went with a 95/95MB/s, read/write speed card based on what I've outlined. Maybe my Note 4 can't even use that much speed, but some device down the road will. Got a good price on it with Best Buy price matching Amazon.
I hope I've made some kind of sense here........