All altcoins including Ethereum took a big hit in August. If they want to recover their ATH, they will easily make ×10 growth, so I prefer to invest in top marketcap coins like Ethereum, EOS, Stellar, and ADA, because they have good potential to atleast recover their ATH in the next bull run.
For that it was enough to take a look at coinmarketcap to find a large amount of altcoins with pumps over 100% from one day to the next.