Avantis AVWC vs Xtrackers MSCI World Momentum

Hey everyone, looking for some feedback on a long-term set-and-forget portfolio for my kid. They have a minimum 20-year investing horizon. I’ve narrowed it down to two completely different factor strategies in the UCITS space: Avantis Global Equity UCITS ETF (AVWC) Xtrackers MSCI World Momentum UCITS ETF (X3M / XDEM) Given that this is for a child with zero emotional attachment to daily volatility and a massive runway, which factor premium would you trust more over 20+ years? submitted by /u/mak