NEO is my favorite POS Coin which gives ROI around 5% annually in the form of gas which can be traded on the exchange.
I've become a very big fan of NEO myself, and of some other PoS coins. As I've mentioned in other threads, the thing that really attracted me to NEO was that you don't have to leave the wallet running all the time in order to earn GAS. I stake PIVX and sometimes my internet gets spotty and it disconnects. It doesn't bother me that the price of NEO got beaten down in the past year, because that allowed me to buy in relatively cheap. We'll see how that whole project works out, but in the meantime I'm happy to at least be earning some income from it.
Ethereum is looking on its change from PoW to PoS soon and I think it will be done soon.
I don't know about that. I've heard it won't be happening soon--but who knows? I'll tell you one thing, though. If ETH does move to PoS, I'll probably invest in as many coins as it takes to start staking. I've heard it isn't too many--but I just can't bring myself to start buying any right now.