I've been thinking a lot about this issue. I heard more than once that many are discussing this topic. Is it safe to invest everything in one, two cryptocurrencies? Or to distribute all the money in all the coins available for this amount?
I think it depend on the coin you are investing. For instance, coins like Ripple are safe to invest in.
XRP is yet another powerful option that many people are not aware of. According to the official data, its the third biggest cryptocurrency right after Bitcoin and Ethereum so, as you can expect, its a pretty good solution.