I have SanDisk 128 GB and it's never given me an issue before. If they're a good price, great.
At 32 GB, I can't imagine spending a lot of money, even with 3.0. Getting 3.1 may be pushing it a bit unless you have a MacBook (12 inch) and/or a USB Type-C smartphone and want to transfer between the 2 via USB.
This is just $10 from Amazon: