Face-Off: Rotten Tomatoes vs. Metacritic

Besides IMDb, Metacritic and Rotten Tomatoes are the top two websites to which people turn to see aggregate scores of movies' ratings but, whereas IMDb's scores are based on users' ratings, Metacritic's and Rotten Tomatoes' main scores are based on reviewers' ratings. The basic idea is the same but ratings are sometimes different because their methodologies differ; of these two, which has more influence over the movies you choose to see?

After voting, feel free to review the reviewers here.