it really depends on where you are planning to go. countries such as australia and new zealand prefer ielts-certified canditates whereas countries like the USA and european countries prefer tofel. based on experience, ielts is much better but the difference isn't that big at all. if u have both certifications, of course, it's much better.

The ultimate measure of a man is not where he stands in moments of comfort, but where he stands at times of challenge and controversy....Martin Luther King