ETH has to break it's current ATH first before we can speculate that it will reach $4000 or $5000.. What will happen IMO is ETH will go crazy like what we are witnessing on bitcoin now, but the question is, will bitcoin continue to pump to affect ETH's run in a positive way?
If ETH reached $1500, then that might be the start of a big run and probably that time bitcoin is already trading at $50,000..
it's hard to predict at the moment, everything is bullish, it's unstoppable.
This is the first time the price of ETH has touched $1000 once again after the major correction and when the price went down around $45 i never expected the market to rally like this even though they were planning to upgrade the consensus to POS but the market is viewing this as the opportunity to make money and so is the reason you are seeing millions or billions being invested in the market taking the price over $1200 and i am expecting this rally could take the price over $2000 in the coming months.