Welcome to tvrosat!
Lots of channels available on c-band, but not necessarily the same ones you find in a paid subscription. The best way to think of c-band is like a basic cable package + tons of wild feeds. You will definitely get NBC, ABC, CBS, Fox, PBS and much more, including almost every diginet. Sometimes premium content pops up, which you can binge watch before it goes back to encrypted. At the moment, all the Discovery Channels are in the clear on 43W and I'm really enjoying them.
The rule of thumb with c-band is that nobody knows when something new will pop up and how long it will last unscrambled. Some premium channels last for a few hours or days, while others remains unscrambled for years. It all depends on the program suppliers and the contracts they sign.
The other side of c-band is all the wild feeds. Most are transmitted unscrambled and there is a ton of it up there. Everything from PPV wrestling/boxing events to regular sports feeds and breaking news. The fun part consists in scanning and finding it.
I've been in c-band since 1983 and can definitely say it is worth it!!