The short answer:
No, absolutely not! Not for your Pi or any other device you currently own (at the time of this post).
The long answer:
After getting very poor performance from an A2 card I ordered from Amazon, I was thinking about ordering direct from SanDisk (to ensure I didn't get a fake), but some interesting things happened along the way...
First I should tell you I ordered a 128GB SanDisk Extreme A2 micro SD card from Amazon and received it a few days ago. I was planning to test it in my Pi 3B+ and report my results here, then use it in my HP x2 Chromebook (Intel 7th Gen hardware). I wasn't expecting to get max performance out of the card (160MBps read/90MBps write), but I was expecting it to be faster than my A1 rated cards.
Initial testing was done on my gaming laptop (faster 7th Gen Intel hardware), and the results were puzzling. The Extreme A2 card was not only much slower than published specs, it was much slower than my A1 rated cards. Sequential read and both read & write IOPS were over 20% lower than my SanDisk Ultra A1 cards.
I ran several fake card test programs, and they all seemed to think the card was legit. Chip ID indicated a SanDisk product, and true capacity was 119.5GB, which is correct for a "128GB" card (due to the misleading way storage companies measure capacity).
I emailed SanDisk to inquire about my poor performance and ask if A2 cards required special hardware or drivers for better performance. I also sent detailed pictures of the card to see if they could identify it as a fake. The reply I got didn't really address my question about special hardware or drivers, but did suggest I might get better performance with their Mobilemate USB 3.0 micro SD card reader. They also said the card looked real, and the benchmark results I included seemed low and offered to issue an RMA if I wanted to send the card in as defective.
At this point I was pretty sure I had a genuine SanDisk card (still think that) and that the card was defective (not so sure about that now...).
I did some searching online and found a few other SD card benchmark results where A2 cards performed worse than A1 cards, so my results seemed to be what others were finding as well.
While poking around on SanDisk's site I noticed that the specs on sandisk.com (160MBps read/90MBps write) did not match the specs for the same card on their shop.sandisk.com web store (90MBps read/60MBps write). So I tossed another support question their way, again asking if A2 cards required special software or hardware to perform well, and again they kind of sidestepped the question by recommending the Mobilemate card reader (although the second answer did state that the Mobilemate was required for maximum performance). They also said the specs on the web store were wrong (160/90 is correct) and they would get that fixed.
So now I'm thinking that card I returned to Amazon yesterday might not have been defective, and that A2 cards not only require special hardware and/or software for maximum performance, they actually perform WORSE than A1 cards without it. This seems to be backed up by results others have experienced when testing A2 cards.
While wandering around the world wide web (of misinformation and despair) I found an article in which SanDisk specifically said that A2 cards were faster than all current mobile technology, and no phones or tablets available now could achieve maximum performance. They tried to spin this as a good thing, and didn't say anything about them performing worse in current tech, but I wonder...
And then, while working my way through "the fine print" on SanDisk's site I stumbled upon this:
For 128GB-1TB: Up to 160MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s,
requires compatible devices capable of reaching such speeds.
As far as I can find, the only "compatible device" is the SanDisk Mobilemate USB 3.0 micro SD card reader (mixed reviews on Amazon).
But now I'm wondering if that "proprietary technology" actually performs worse in non-compatible devices?
So was the card I returned really defective, or is A2 tech not ready for primetime (requires "compatible devices" to not perform like crap)?
My recommendation at this point in time is to avoid A2 cards. You'll spend more money and get less performance.
Get the SanDisk Ultra A1 or Ultra Plus A1 cards. They're affordable and fast!
Off topic side note:
Amazon has really streamlined their return process. When I clicked on the link to return the card I was offered a new option to drop it off at a UPS store with a code. No packing or even printing a label required. Amazon sent a QR code to my phone, and I just let them scan the code at the UPS store and handed them the card. They packed and shipped it for me. That was quicker and easier than returning something to a local store.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?