If you have 10000$. It's better to buy ethereum. 2018 is the year of ethereum

Buying bitcoin next year wont give you alot of profit. It might increase in value but not twice its base.
Best of luck
Hey this is too swag. Don't be too sure when you talk, you might get some noobs buy bags of your recommended coin and end up in a trash bin. It is safer to say that next year will be the year of the altcoins! Think about this - lots of noobs got into bitcoin during the $9000 mark, now imagine what will happen if those noobs discover altcoins by january. That is chicago bulls man!