We never know when the dip is over. But buying NEO right now for 57$ is a great buy. So i looking to add some more later today. Other coins that i might add is WTC,OMG and ICX.
I prefer buying Ethereum. Since the market is in a dip and the coin is at $450, it is a great buy and the coin is the most promising investment right now. The coin has a highly advanced blockchain and a very secure cryptography. Also with one of the best development teams behind it, the coin can also be used as a token for smart, decentralised applications. It is a great coin and can easily cross the $1500 mark by the end of 2018. You can expect great returns from it.