Bitcoin and Ethereum are two top projects to invest into for now, there are some second tier projects, like Monero, Neo, ICON, Cardano and Wanchain IMO. I think people need to understand that it is possible to have some of these small cap to grow but the risk of investing in them just keep increasing now, because we have the space full of scam projects
I suggest to invest from EOS. This project was being tagged as Blockchain 3.0 and transaction were more faster than both BTC and ETH. Already $11,728,469,233 from market cap and already at Top 5. It may overtake Ripple at top 3 in the future.