You can always do both, I cannot decide righ noe because the value of bitcoins come on their highest with a 5300$ and still continuing to grow. Luckily I had saved some bitcoins on my wallet so I got some profits on that pump. On the other hand, ethereum is quite cheaper than bitcoins which is more affordable, and I also hope that their value will increase just like what happened to bitcoins. I bought a lot of ethereum last month because a lot of people are saying thaf it is the nect bitcoins and I want to be a millionaire.