It says up to 64 GB so I think any quality SDHC or SDXC up to 64 GB should work. Knockoffs usually doesn't work so buy from a reliable source.
I use Sandisk Ultra 32GB.
Format the card to FAT32 with 32kB cluster size. Don't use the quick format option if it's the first time you format the card (the factory formatting might have been a quick one). After that it's ok.