Amazon has a very hot deal (Only Today!) on SanDisk Extreme SD cards. This is the latest version with UHS speed class 3 and top out at 90MB/s. The 256GB and 128GB cards have already sold out (but are back-orderable), but 64GB and 32GB cards are in stock.
- 256GB Extreme UHS-I U3 SDXC 90MB/s for $127.99 (List price $399.99) at Amazon
- 128GB Extreme UHS-I U3 SDXC 90MB/s for $70.39 (List price $199.99) at Amazon
- 64GB Extreme UHS-I U3 SDXC 90MB/s for $31.19 (List price $99.99) at Amazon
- 32GB Extreme UHS-I U3 SDHC 90MB/s for $15.99 (List price $49.99) at Amazon