Those mentioned are really good investment. However every user will have their own plans on investment. Every coin mentioned above gives good ROI on the investment long term. These are risk free altcoins, because they assure of the growth.

Whenever we make an investment into cryptocurrency we need to look for its long term growth, and if the market is able to provide the growth in the short term just take it and invest back when it turns bearish. For now it looks like right moment for an entry into the altcoins market.