sumokoin is a fork of monero.... i prefer spectrecoin. Best and innovate technology
correct about sumokoin, it's just a cheap copy with a huge 10% premine... they bring nothing new to monero...
about xspec: it's pure vapourware at the moment... There's no proof whatsoever that they cracked stealth staking. There's no white paper, there's no technical details... there's no peerreview, there's just (empty) promises...