SanDisk Extreme PRO UHS-II microSDXC Memory Cards: 64GB $45 or 128GB $90 + free s/h

these won’t get you max speed unless you’re using a proper uhs-ii memory card reader… otherwise they will be capped at around 85MB/s. Most readers, unless they state v90 or uhs-ii are not compatible.
SanDisk Extreme PRO UHS-II microSDXC Memory Cards

• 64GB $45
• 128GB $90

+ free s/h