Sandisk is highly competitive brand with full privacy of your data.
Always whatever the memmory is shown by the brand it fulfill the whole space for example if it shows 8GB surely it will be of 8GB. Very safe and secure. We can buy it from anywhere world wide with its warranty.
Its the name of trust. Anywhere anytime if I want to buy MicroSDHC memory card I always go for Sandisk.Its co compatible to almost all the mobile and other brands.No doubt Sandisk is a number one brand in Memory Cards.