That is a good point that Buddhism and some other Eastern religions seem ahead intellectually of Western religions consisdering the fact that most of the Eastern ones have been around longer than Eastern ones. Very odd indeed.
Western religions such as what? As far as I'm aware all major religions were started in the east. But as for the OP question: The truth. (Islam).
Christianity.. I also really like buddhism because it seems to bring out the best in people and make people think positively