Kingston 256GB SDXC UHS-I U3 Memory Card
While this really is an excellent SD card for speed, your choice will likely ultimately come down to what speed class your device can support. This is a great UHS-I class card offering maximum read speeds up to 90MB/s and write speeds as high as 80MB/s. That’s excellent performance for a UHS-I class card, but falls incredibly short of the type of speed you can get with a UHS-II card. However, if your devices don’t have UHS-II support, then this is a great choice.
This 256GB model gives you a ton of space for your files, and there are smaller options between 32GB and 128GB of storage. There’s certainly nothing wrong with this card, but it just can’t compete with some of the faster UHS-II cards available now; however, it has much more storage than even the best of said faster options.