How about Sumokoin ?
SUMOKOIN is created with a high level of privacy in mind, setting Ring Confidential Transactions (RingCT) with minimum ringsize (mixin) of 12 to conceal sources/amounts transferred and make it high resistance to blockchain analysis.
SUMOKOIN is untraceable; sending and receiving addresses are encrypted, transacted amounts are obfuscated by default. Transactions on the SUMOKOIN blockchain cannot be linked to a particular user or real-world identity.
I would say without a doubt Monero, it is extremely undervalued atm it has a great development team with complete privacy. I am also a huge fan of SUMO which is a Monero fork
Sumo is the most promising imo. Fast development, truly fungible. Small market cap means lots of room to grow.
I did not know about the sumokoin, thanks guys for the information. I've put more established coins into my list because otherwise it would be too long.. However, at first glance Sumokoin looks like a promising coin that should be higher than at the end of the fifth hundred on the coinmarketcap. Slightly improved Monero fork, developers do their job, people talk about it on bitcointalk

- might be a good investment.