Thanks for the info. It's sorta funny that UHS-II or even UHS-III is a thing when even the pretty expensive high-grade V90 tag only guarantees speeds of 90 MB/s, which the UHS-I cards and bus can still deliver. Hell, the U3 speed grade only guarantees 30, seems like a waste to go UHS-II or above.
Speaking of speeds, so the switch bus onlny goes up to 100 MB/s.
So when i have the choice between let's say, a SanDisk Extreme (U3,V30,A2) and a more expensive Sandisk Extreme Pro (U3, V30, A2), i should pick the cheaper one? Apparently the Pro has higher read speeds up to 170 MB/s, but if the switch doesn't go that high anyways...