A2-class microSD cards offer no better performance for the Raspberry Pi
Update: See follow-up post about A1 vs A2 performance, Raspberry Pi microSD follow-up, SD Association fools me twice?.
After I published my 2019 Raspberry Pi microSD card performance comparison, I received a lot of feedback about newer 'A2' Application Performance class microSD cards, and how they could produce even better performance for a Raspberry Pi.
None of these cards are fakes; grainy halftone printing is visible because I shot this with a macro lens.