I already argued as to why I picked each one of these cryptocurrencies. They are the most stable and some of the most technologically advanced ones. And they seem to offer more growth than most small currencies along with stability and averseness. While there are some coins that are small right now but will be in the near future, they are a lot less stable, are more prone to devaluation and so on. Most people shouldn't over complicate everything and stick to the trust worthy currencies that are attracting the most attention and receiving the largest sums of money into their financial circulation. Because they're on top right now doesn't mean that it will change in the future and that these cryptos won't give better returns than most small ones.