For long-term investments, the top coins are always the main choice of many people,
other than that investing in top coins can be said to be safe so this makes many people recommend it,
but we also still need to do our own research before making a decision
For a top coin like Bitcoin, I don't think there is a need to do research again and again because Bitcoin is not a new coin that still needs to be researched all the time like new coins nowadays.
So just choose to invest and set profit targets for the next few years for everyone from now on.