In my opinion the cryptos that will bring the greatest value are the coins focusing on use cases such as internet of things/ internet of services smart contract platform. There are a few interesting platforms that have not been release yet, Cosmos network (Atom) the sovrin Ico and tezos(xtz). Other currently traded coins I would consider are cardano(Ada), Ravencoin (rvn), miota (iota), (Neo), Enigma (eng), neblio(nelb) these are just a few, however my main point was that cryptos are trading at steep discounts. With a little research patience and good timing these dowturns could become great opportunities.