My channel is a C. I don't know what to shoot for because even the channels I love watching have B to B+. I feel like socialblade has a really tough grading scale or something because the only channels I know of that have an A- or higher are the top 25 or so channels. Also, their predictions are horrible. The first time I checked them, it said it would take me a year to get 500 subscribers. 3 months later, I got 500, and now it says I won't even break 10K until over 5 years. It seems like their formula is way off.