Great article on the potential of IOTA. But I have also posted a link about QRL being an upcoming rival. Whilst QRL looks like much better technology, IOTA is already much more established and accepted. So I think both are good investments to have in the portfolio, as one (if not both) will likely shine.
(The article also has links to price predictions for BTC and ETH too.)
And get knowledgeable about the Quantum Resistance Ledger here:
https://itsblockchain.com/qrl-quantum-computing-bitcoin/