If you consider IOTA, then you should take a look at RaiBlocks (XRB)
Raiblocks has IOTA like features, but with a market cap of 15 million compared to 2.4B market cap of IOTA
- No fees: The RaiBlocks network has no notion of fees.
- Low latency: Transactions are natively processed instantly giving a responsive experience.
- Scalability: Micropayments require a system capable of significant scalability
- Simplicity: Users have a simple experience without technical jargon.
Their wallet release is almost ready, and I personally see this as my next X100 (average entry 1000 sats)
You can trade RaiBlocks on Bitgrail/Mercatox. Bittrex will probably add them soon after their wallet is released and stable