I think that in such a market it is dangerous to buy, as the prices at any time can collapse like it was a few days ago, but if you want to buy coins, better buy Bitcoin and the ethereum.
If today look at the crypto currency market, even Bitcoin and the etherium may fall even lower. Relative to others, I already have no hopes. But nevertheless, each of us believes in the great future of the crypto-currencies, Therefore, you need to get not only patience, but courage.