I still love ethereum, base on blockchain and smart contract. Well,  I really wouldn't be surprised if we see Ethereum double in 2018. Beside that i like Steem. Because Steem is a next generation blockchain, The best part i like about Steem is that you need absolutely 0 knowledge of cryptos or blockchains to get started. All you have to do is signup at Steemit.com and start posting! If you have any interesting content and/or media to share, you can earn Steem/money!