Hard to go wrong with coins that are huge market cap coins that are down 80-90%+ since all time high prices. It is trading, and there is always risk but I like coins that have a large market cap, lots of quality development and have plenty of room to grow.
As what we've looking for, definitely all coins are entitled for such development and market capitalization and yet, huge market cap will surely gains that though.
But not only the investors will after that, only they wanting gains and continuous investment which be preferable for long term investment.