Hi all, I have a Galaxy S6 Edge (bought off here) i'm now using. I haven't used an Android phone since my last one, a Nexus S. Few questions: Should I upgrade it from Lollypop to Nougat? How do I root it these days? What's the go-to AOSP based ROM? Cyanogenmod still? Is there a way to make the battery life not suck? Cheers.