Which do you prefer?

Hello Everyone, want to ask few questions here.
Short term or Long term investment?
Which is more profitable to you?
What coins do think that is good for long term now?
Feel free to comment your ideas and opinions.
Long-term investment with short-term together will yield more profits. If you have free time, then you will approach this strategy. I would pay attention to such coins as bitcoin, Ethereum, EOS, Stratis, Waves. There are still many very good coins. However, these attract me more.