If you ask me i would go for ethereum because it's popular and many people are calling it as a bitcoin 2.0, But there is still a lot of coins to choose from so it's better if you do some research on google and i'm sure it will help you a lot because almost the answers are there. Oh i forgot, you can also dig some topic/threads on altcoin section in that section there are many members that discussing about the good coins that can be profitable.
If i was a noob which i am, i wouldnt take any advice for recommendations. I particularly wouldnt decide to take ethereum since its sinking at the moment and its not looking promising that it going to even be able to make a comeback after the fork. ethereum would be super high risk. Its maybe time to go back to alts that have passed the test of time.
Edit, I never saw that this was for mining. In that case you could mine ethereum to sell but i wouldnt reccomend buying any. Ethereum atm is still marginally profitable to mine fo rnow.
