I really like the concept of Iota, and have been consolidating a small position in this coin all the time it was <$.50 .
The DAG is a very elegant alternative to blockchain, and if the devs can pull of their vision, then feeless and fast transactions could be a real game changer, especially in the arena of micro-transactions.
There is still valid criticism about the Coordinator that essentially makes this a centralised coin until it is removed however. But as the devs say, it is to prevent the nascent network from being attacked and crippled before it has a chance to scale and deliver.
A very ambitious project, a bit of gamble due to the unproven nature of the tech, and a coin for the long hold (3-5 years). Cosnidering the interest this coin is getting from big industry names like Bosch, Fujitsu, Volkswagen, Innogy, and the involvement of top universities like UCL + Imperial, it could pay off bigtime!