I would recommend DigiByte. One of the best blockchains and a legit dev with a fantastic vision!
DigiByte is a good coin. There are other good ones such as Bitcoin Cash or the Ethereum, or ZCash.
Please don't jump on the DGB hype-train that 12 year olds are trying to promote. If you want to make some serious money with holding only you should definitely take a look at Nexus, Wagerr, Wbb, Game, MGO or Stratis. Or participate in an ICO although that's way more risky. (Kyber, Chainlink, Guts and even Atlant)
I don’t even believe in these coins. They are also not capable of generating some good results in the near future. If you really want some good profit without wastage of time and money, then the best option as usual is bitcoins, other than that you can invest into waves, neo and litecoins.