@alimais "Efficient Market Hypothesis" states that asset prices reflect all available information. This forum of regular vault dwellers knows exactly the same (or less, of course) than "the market". All hopes and dreams about future returns of S&P are already included in its price. Last year's Vanguard projections say that World will do better than S&P500, but this projections are already included in prices as well.
The only choice you actually have is risk level and fees, the rest is just guessing, and, again, most probable outcomes are already included in price.