I'd go all in on Iota. Transactions without a fee, Scalable. Meant for Machine to Machine Payments. The internet of things, nano transactions.. Doesn't use a b

I'd go all in on Iota. Transactions without a fee, Scalable. Meant for Machine to Machine Payments. The internet of things, nano transactions.. Doesn't use a blockchain but instead uses a Tangle. It's quite early and the tech may seem new but it does solve a lot of the scaling issues wrought with "blockchains".