Well, it's staking that you would likely need. CVC, DOT, and ADA offer this type of algo which increases your investment safely. If you have to choose between the three only, pick DOT, it's already a fully developed project like ETH.

Its price however is going to be a big problem when it comes to investing to DOT because its almost $30. A richman wouldn't have that problem but for someone how has no thousands of USD will struggle. ADA is a much cheaper project which is almost like DOT as well. Only a few differences between the two. CVC I believe is a privacy coin. I don't know and I'm not liking the token.