So, I have been looking heavily into staking and even staked a couple hundred Peercoin for a year back in 2014. But MARCO, IC, MEDIC and GAINER are a few of the coins I have looked at and decided to stake. I purchased the coins and began staking and running masternodes. The one that stands out is MARCO, Marble Coin. Simply because it is a coin partially valued on the staking and masternodes of OTHER coins. Yes, the MARCO team invests in other cryptos that permit POS and masternodes and they then purchase masternodes of the other coins and payout to investors of masternodes of MARCO. Okay, understand that? You purchase a MARCO masternode and receive the daily masternode payout AND a weekly POI (proof of investment) payout in BTC. This POI payment is the result of the MARCO team's investments in other masternodes. This, I believe, is a superb opportunity because the current POW model is electrical unsustainable. Check them out for more detailed information about the POI, POS and masternode model of MARCO. https://marblecoin.io