I studied a lot of cryptocurrencies and once I found a cryptocurrency PRIZM. Which has no analogues, because it does not need expensive equipment for mining. You can just get it when you buy it and keep it in your wallet.
I use PRIZM for only 4 months, but even for this period I mine PRIZM cryptocurrency in my wallet, I am very pleased with passive income, because it brings me up to 9.9% per month, but it can be more if you connect a node.
Not a single coin with POS-mining technology brings such profitability as PZM
Therefore, whoever is really looking for safe, but profitable types of investments, I would recommend that everyone look at this coin. It has an attractive price, because it is not very well known yet, but as we know everything can change very quickly.