for now in 2018 I suggest you can invest and buy as many XRP coins as you can because I see this year there will be a good development from XRP maybe the price can go up again and can be very expensive so you should be able to prepare assets you are XRP.
I bought some XRP last year. and this year they drop 60% less. I bought each for 1$ and now that is 0.4$. so I am at lost at the moment. I don't think it'll increase very soon. so my investment is locked until it recovers. and if I sell it now. I'll be in 100% lose.
I should better invest in the real cryptocurrencies that are in the top-20, man. The best tokens for me are still Ethereum, DASH, Cardano, TRON, ICON, and Stellar.
well, so far I have not been interested in coins other than ETH and bitcoin. these two coins are the coins that have the greatest potential for investment that is happening at this time. but, right now I also still hold a few coins. maybe I will sell it when I need it.