If you are looking for the best POS coin with a very good return and you may go to this site https://www.stakingrewards.com/cryptoassets?page=1&sort=tableReward_DESC

Here's my list
elrond
synthetix
DOT
Kusama

I consider these coins as my best choice from the daily trade volume and how much reward that is offered by them all. You can get more coins from the like that I have provided it above.