I know there are a lot of options and potential coins out there but we should be smart enough when choosing them. Choosing Bitcoin together with ETH is something enough to hold and certainly have no regrets about doing this. I don't discourage people to look for other altcoins, however, if we are looking for something to hold for the long term, these two coins are the best option.

Well, you can pick any of the top 10 altcoins in the market but never take them all, 3-5 coins are enough, just accumulate more of them, though.