the beginning of 2018 is both bitcoin nor ethereum made quite afraid because the prices are falling so far, but as late as 2018 later I think both these coins will start growing nice and will progressively rise rapidly.

Well its hard to says which coin will rule and dominate 2018 they both starting to rise . Ethereum has advantage and benefits over Bitcoin the same as Bitcoin also has advantage and benefits over Ethereum . It is hard to decide . But if i am going for short term investment i am going for Ethereum because of it is more stable than Bitcoin and for long term i am going for Bitcoin because in the future it will reach a unexpected value.

Bitcoin advantages is only on its worldwide adoption and no more. Ethereum provides more scalability blockchain compared with the bitcoin. It can be combined with various improvement just like hybrid and sharding blockchain. Ethereum could be a winner at this moment.The majority of people are still talking about the future of lightning network.

I think both of them will master the crypto world in 2018. Why do I choose both? Because Bitcoin and Ethereum are the best crypto and very difficult to choose between the two. If I was told to choose one, I would not choose it. If I have a lot of money, surely I will invest into both. Bitcoin will I give a lot of money because Bitcoin fee is now so big that I have to invest a lot to be able to enjoy profit and I can get a lot of profit. While Ethereum will I if as much as possible so I can get a lot of profit. Today Ethereum has a price similar to Bitcoin in the past, and it reminds me of my past failures, and I will not repeat it again. I will invest in Ethereum soon and make most of it while I still can.

If I were more into the position of ETH than others because of the ETH is very simple and very satisfy with the result and can be said to be able to invest safely.

I think bitcoin first. BUT think of it ! if you are observing CMC soin market cap you will definitely see the graphs and pattern all cryptocurrency have the same almost the same behavior in the graph. and it is based on how bitcoin will move. SO I should probably say that they will same rule the 2018.
but if you have small assets Ethereum is the best choice after all

What do you think about bitcoin? Isn't it a safe investment? For ETH fans, it will be ETH and for bitcoin fans including me then I would definitely choose bitcoin. But as a trader, the best thing to do is to diversify your investment and don't stay only on a single investment which you can also do with ETH.

I like both of these crypto currencies, so I have both bitcoin and ethereum in my portfolio. Sometimes I tend more to bitcoin, then to ethereum. I do not understand why I need to choose only one coin?

BTC will have its own track and ETH as well. All crypto coins value would really increase to the moon this year though the beginning is really not supportive. ETH network is dong many small projects. Ether coin is used in the market for these projects and yes Ether is getting more values. ETH will have its own hike and yes BTC as well. BTC is expected ato minimum reach $20K and ETH is expected to reach $2K to $2.5K.

I prefer for ethereum it has potential.