I'm not sure.. I've read a bit about zoin and I like that and it aims to become a true community coin that gives power to the user. It does not have infinite supply, block time is 2,5 min, and there was no premining. The market cap is a little higher than sumokoin but still, it has plenty of room to grow. It's also CPU-only mining. Plus, the zoin team has just launch the first zerocoin protocol web wallet.