True. Blackcoin has been one of the oldest PoS coins in the market, providing greater strength and innovation with its unique PoS implementations. As many altcoins are rising in price and popularity among everyday people, Blackcoin is still undervalued but I believe that it may change as its true potential becomes realized.

I've used to have BLK and would love to get some more and save up for the future, as you'll never know when your holdings may become valuable someday in the future.

Things aside, I've also heard that both Tekcoin and Mintcoin are great PoS cryptocurrencies with high stake rates, with their best feature being such where you don't need to have your wallet open at all times to earn from your holdings. Every 30 days, you would check up your wallet to claim your stakes, which makes them convenient to use.

Another coin that looked great was Paycoin, but nowadays it seems abandoned by its dev team, as well as it had a bad reputation from being asociated with Garza of the GAW Miners scheme. But still, it is being traded at the markets which makes it interesting to stake and hold.

Nevertheless, always make your research before making any investment on PoS coins as they're extremely risky. Just sharing my thoughts.