I agree with you, Bitcoin and Ethereum are the keys among others. In my opinion, it's better if you can give more focus on coins that are in the top 5 right now, because that is likely to bring profit to you at the right time. We all know that nowadays new projects are hard to believe. They are telling us to HODL, while on their own there has not been any significant development and they seem to have failed in making us feel safe in the current position.