ProGrade 250MB/s UHS-II V90 64GB SDXC Card Review with reader benchmarks and camera write speed comparison - Camera Memory Speed Comparison & Performance tests for SD and CF cards
Panasonic 64GB SDXC UHS-II (U3) 280MB/s Memory Card (RP-SDZA64GAK) - UK Digital
Rent 128GB Lexar V90 SD card in London (rent for £10.00 / day, £7.14 / week)
Integral 256GB UHS-II SD Card V90 Up to 300MBs Read and 265MBs Write Speed 1866X SDXC Professional High Speed Memory Card : Amazon.co.uk: Computers & Accessories