It is better to buy new from ICO or after ICO right away. those altcoins has a potential to grow upto 100x, however, the risk is high.
I agree, New Altcoins and New ICOs are risky but if you do good research you avoid to fall into scams and fraud.
But the good news is if you're lucky, you can get x100 to x1000 folds of profits because New Cryptocurrencies are very cheap on their start of launching and then coins' will eventually increasing every after time.
Investing Cryptocurrency for short-term and long-term is the best kind of investing because unlike keeping your money in the bank, it offers you a lot of opportunities.