I will suggest that we need to be careful from investing on the new crypto projects coming in, they could place a danger on us if we invest without making adequate research concerning them as many of them may not perform as expected, if we are to invest, we can consider the old and existing ones for our investment in which we have seen how consistent their performance was over time and could be able to make track on.
There are thousands of coins already existing and we also see new coins emerging in with claim of novelty and solution for exisitng blockchainproblems. The success rate of news coins is very low and that's why I do agree that one must be careful while investing in new coin specially when it's lucrative because of cheap price. If I have to invest in alts then its best to pick from top 50 alts listed on CMC. Like etherum is a good choice among all alts already available in the market though my first and foremost choice is always Bitcoin.