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.
The strength of the short-term strategy is the fast turnaround and quick profit margins. But not necessarily profitable. Long-term time-consuming strategy is a good time to invest in the right time. I focus on Bitcoin and ETH as long term. ICOS and Altcoins campaigns are usually short-term.