Ranked in these QuestionsQuestion Ranking
Pro Anonymity - Coming Soon
Anonymous Transactions and messaging is on the roadmap!
Pro Fully Decentralized
IOTA is currently partially centralized due to its "coordinator" which is expected to be soon removed.
Con Unproven consensus mechanism
The new consensus mechanism is unproven against attack. Mana can be rented.
Con Not as Secure
It is arguably not as secure as other cryptocurrencies like NANO.