I prefer empiricism a bit more for two reasons:
1. Logic can be used incorrectly, and often is.
2. Facts are more reliable than reasoning
Rationalism creates knowledge from logical laws. For example, a contradiction means that something is wrong.
But rationalism is limited in this way, because in any reasoning without clear contradiction, rationalism can easily lead to incorrect conclusions or to wishful thinking. Even mathematicians, who work with most pure form of rationalism, make mistakes.
Empiricism, on the other hand, focuses on gathering as much knowledge as possible, first.
Its best to use both empiricism and rationalism, with slight focus on empiricism because you need facts before you can reason. In facts, facts often support correct logic, where mere thinking about contradictions could itself contradict with an unknown fact.