Re: 6gb or 8gb
You should definitely get the 8GB version and keep yourself future proof. I saw reviews from android central and 8GB version is blazing fast with almost zero app reloads while multitasking
I am not sure about the battery life of s8 because it has the same 3000mah as s7. But the new snapdragon chip should be less power hungry (10nm process) and could save some juice when compared to s7
Not needed. Your data remains safe after Marshmallow official OTA update. Battery life just got better after this update. so sit back relaxed and wait for your update.
Awesome Contest. Nexus 6P - THE KING. Love to experience the pure Vanilla Android which should be blazing fast and its fantabulous Camera with vibrant colors.