The top 5 altcoins can be your target to accumulate, except the forked coins. This is generic but it works and hence it gets followed by most altcoin traders. Don't jump into recently launched coins,because it's very risky.
exactly, I agree with your opinion, if you want a safe investment then investing in the top 5 altcoin is the right choice, myself prefer to do DCA in the top 5 altcoin, because it will definitely give me a profit in the future and I'm not too worried about losing my money (the risk is smaller than a new altcoin), therefore in my opinion a safe investment for the long term or short term and will definitely provide profits is the top 5 altcoin.