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.