The best religion, from a practical point of view, would be the one which places you at the best advantage in your particular cultural space. In a theocracy, this is easy to find. In a pluralistic society, check to see which religion will offer you the greatest networking opportunities and highest level of social acceptance. Especially see what religions the most materially sucessful people in your locality or field subscribe to. In most of the United States, Episcopalianism or Presbyterianism are safe choices. In specific areas, Judaism, Catholicism, Methodism, or Baptism might serve you better.
But you will probably live less than 100 years, so why should it matter? After all, the moment you are gone, you won't remember yourself. And it won't take many years for the rest of the people to forget you.
Religion that does not have everlasting life as its goal is kinda useless.
