There are many advantages of altcoins like we can afford to invest some of altcoins because they are cheaper and we can choose and select because there are many altcoins in the market. High chances to earn high at altcoins because many of them has the potential and capabilities to rise high in the future.
in any case, except for the most relevant investments in Bitcoin and the etherium, you need to choose a more rated altcoin. Of course, each user has his own views on the choice, but it is very difficult to determine the prospects for each coin.