Should I buy Xperia Z2 or wait for Xperia M4 Aqua? Well I like some upgrades on M4 Aqua. For Exp: It doesn't have a flap on micro-usb port, it has 64-bit processor and it's more waterproof. But also it only has Snapdragon 615 processor when the Z2 has 801 (but 32-bit), And it has more Internal...