SANDISK 1TB Extreme PRO SDXC UHS-I Memory Card - C10, U3, V30, 4K UHD, SD Card - SDSDXXD-1T00-GN4IN

These are the only cards I use. They even work in the C70 in every mode except ALL-I and RAW ST. I know camera makers want a speed buffer but V90 sucks; very expensive and forget about 1TB. What really shocks people is that I can even shoot 4K30FPS Cinema Raw LT in the C70 with those cards.