Investing in new coins can bring more profit but it's more risky, that's obvious. But investing in ETH is more secure and if you look at the prices now is a very good time to buy some.
You're right. You can get more profit if you invest in a promising new coin, but it's better not to risk and invest in ETH.
Well I always look to lower the risk as much as possible. Investing in BTC or ETH has very low risk levels.