SAMSUNG MZ-77E500BW 870 Evo 560MB-520MB/s Sata3 2.5" SSD - 500GB

At £50 more than the QVO yet sporting almost identical specification, you’d be hard pushed at first to see the benefit of the EVO drive. The different comes with the internal workings that see a V-NAND 3-bit rather than 4-bit MLC (Multi-Level Cell).