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
I think if you have $10000 you must invest or buy bitcoin or ethereum because both of them will help you to have much income. I think buying bitcoin will help you and give a lot of income so that you must invest in bitcoin than investing in other properties.