So it doesn't matter what coins is it as long as it's available to be exchanged to bitcoin or to usd. But It would be best if it's in top 10 in the
https://coinmarketcap.com/ so I can directly hold it for a long term, well this is just according to my opinion and own interest.
I agree with this, and that's the strategy I follow too. When ever I have to enough to buy a coin that I consider worth holding long term I check the coinmarketcap and choose one from the top 10 or 15 there is.
and also recently there's a interest among the community for NEO (NE5) based tokens too, as they hold a good potential in the next few years, So trying out some of them too.
The fact that the fundamental coins of the top 20 repeatedly pumped, and the chance that the coin will give a good profit in the near future is very small, (unless the coin is not at the bottom and in the near future is not zaplonirovan powerful release or marketing), look closely to new promising coins such as Pundi x for example.