Sumokoin is the most promising of the group IMHO and I have taken a position
1. Its a fork of Monero with a $1B+ market cap. XMR is arguably one of the strongest of the crypto currencies with a legitimate franchise along with BTC.
2. It benefits from the privacy trend that lifts all boats including Monero, Zach, Verge, Aeon, DigitalNote, ZClassic, Zencash, Deep Onion, Spectrecoin
As governments continue to wage the war on cash and the spectre of increased taxation / wealth confiscation exists the demand for privacy oriented currencies will continue to escalate.
3. There is quite a bit of development for a $1M market cap coin, please see below for a recent SUMO update from one of the main developers.
FYI, devs won't go anywhere and are working on:
1. GUI Wallet bugs: these nasty bugs (not able to connect to/sync with network and corrupted wallet files) have been addressed and fixed at the next minor release in a couple of days.
2. Core devs: the subaddress codes will be on Github for community test by the end of this month and will come to official release when no issues found (probably in October)
3. New website and rebranding: we are plan to introduce new website on early October, new brand/new color theme then will be requested to update on all other sites.
4. Exchanges: we are still working to get SUMOKOIN listed on other big exchanges. We'll update info when we have firm confirmation from any of them.
Thanks a lot for your kind supports.
Sumoshi Tanaka