For sure both of this coin are trusted and every each coin have different supporters and investors they have investors that have both coins and the rest is only one. Im not a trader who are putting all my money in one coins it is very risky to lose it so I have different coins. About trusting between the two I must choose the ethereum because I invested to this coin 4 to 5 years ago when I was remember and I know it is good coin but BNB also because of the Binance exchanges who is trusted also .