Thanks for the testing and the correction.

For 4K video, it doesn't seem to matter, as even the slowest cards can keep up, from my own testing, and that of others. However, I haven't been doing many AEB shots recently, nor spherical panoramas, but I intend to! Write speed is definitely a factor there, because of the tiny buffer in the camera, especially when the camera supports the higher write speed, which you have discovered. Confirmed in this thread, too!
MicroSD card testing for photography, 5 shot AEB
I just found the exact same 32GB Extreme
Plus card for the same price at B&H
without sales tax, and ordered 2 to get free expedited shipping. Thanks for the tip! Price expires at midnight Saturday!
SanDisk 32GB Extreme Plus UHS-I microSDHC SDSQXSG-032G-ANCMA B&H