As bitcoin continue to rise, so will etherum. I am thinking that we will see eth sell at $17-25 around July.

How and why do I think like this, well it's because investors know that they can take profit from btc, and they know that newcomers think of a way to make a quick buck, in example, eth or nowadays, lsk. But ETH is more safe than lsk because ETH have been here for a longer period of time and it's currently stable. So they will pump ETH aswell.

Just follow the market they say.