POS coins give a nice rewards. OP Coin gives one of the highest rewards out there with massive 1200% annual or 3.29% daily. It will go up to 1500%. But you need to watch for inflation on this one, because of new coins being minted for rewards. If you can wait longer, after the end of airdrop you should have a nice amount and you could wait for a good price. It's not a safe investment, so if you just started look for another one or invest just a small amount.