I second XSN, not sure if it will be the next to go to the moon but it will defs be travelling there at some point soon. The dev team are absolutely smashing through their roadmap. They are the worlds first to bring TPoS tech to the crypto space and it works amazing. They are also releasing StakeNet.io soon and the UI looks very slick from what they have already shown us. A DEX is also near release along with privacy features, DAPPs, CCPoS and much more.

What makes XSN appealing to me though is that they are laser focussed on providing a Cross Chain platform via their MN Network, this will enable all POS coins to layer on top of it to add features to their own coin without the need to fork or anything like that. This I think will be huge later this year and push XSN to be a big player in the crypto sector.