I would recommend Tekcoin. It is very cheap right now and profitable to stake and trade. Considering its price fluctuations lately, it would be best to buy them low and sell them high for bigger profits. Also, Tekcoin is very unique to other PoS coins considering the fact that you only need to open the wallet every 30 days to receive your stake. You can earn up to 40% interest on your TEK balance every 30 days.
Another good PoS coin would be Diamond. It has very limited supply plus an APR of 25% which it makes it one of the most profitable proof of stake coins available. Hope this helps