I think IoTA is a great investment for both short and long term. For short term, it has the potential to be the best crypto-currency for micro-payments with its new technology that allows low transaction fees. Considering the long term IoTA can achieve things noone could believe. According to McKinsey By 2020, it is estimated that the number of Internet-connected things will reach 50 billion. A recent research report compiled by McKinsey forecasted that the total economic impact of the IoT on the global economy could reach US$11.1 trillion per year by 2025. If you believe IoTA can create value in Internet of Things business, it's probably one of the best long term cryptocurrency investment.