So, here is my two cents...the San disk micro sd V30 uhs-3 gold and red card and the Samsung pro + (black and white, now green or blue or something) and Samsung Evo + (orange and white) UHS-3 cards work for the E90. I have found all three cards on sale every once in a while at various retail stores for under $25.
I also know the Samsung Evo cards work well with the E50/E90 (see teaser video in the teaser video post).
San Disk Extreme microSD Card | SanDisk
Samsung micro Sd card page Samsung Memory Cards - Memory Storage | Samsung US
Samsung Pro Plus MicroSDXC PRO Plus Memory Card w/ Adapter 64GB (2017 Model) Memory & Storage - MB-MD64GA/AM | Samsung US
Samsung Evo MicroSDXC EVO Memory Card w/ Adapter 64GB (2017 Model) Memory & Storage - MB-MP64GA/AM | Samsung US
Woweee!!
The the protection specs on the Samsung are impressive!!!
"the EVO memory cards can withstand up to 72 hours in seawater¹, extreme temperatures², airport X-ray machines³ and magnetic fields⁴ equivalent to an MRI scanner."
As I said, Impressive
