Android Central by far. They have a great team full of classically trained journalists, multi-national coverage, and an electrical engineer with an epic beard. They also do a weekly live podcast which has been fantastic.
The Commandments of Android
1) Open RAM is wasted RAM - Don't use Task Killers
2) Cheap devices are cheap for a reason. Don't expect high end performance.
3) Boot Loop = Wipe.
4) There are no viruses for android.