IOTA has made a really good start lately. I do not know how long it will last in 2018. But there is something I know. The project is very strong. Buying can be done as the price drops. It is not an investment recommendation.
Why not? It's a long term Hodl.. for at least 5 years and when everything works out fine it can crush bitcoin. The total marketcap it can grow to is impressive. We are an early adapter.