Decred (DCR). Current profit around 1.8% per month and each PoS gives you a vote power in the coin's future (check out more infos in Decred topic).
It is also flying "below radar" - it will annunce lightning nextwork next days and several other features defined in the roadmap. The dev team is delivering in time.
im staking decred since a year now, and i really love it. it was more profitable at the beginning, but still nice, and im sure this coin will increase its value alot (lightning network release should come in 5 days i think).