For the first I suggest talking to people who have taken the actual classes and find out why they like or dislike the course. The why is at least as important as if the actually like it or not. If the reason they like the course is “no work, easy A” I suggest that’s not the best course. There are other factors that are not as clear-cut like the amount of theory/applied. This is more personal preference and only you know what you prefer. If you poke around forums you can often find people who have taken any given course in question.

The second answer is a little harder to find. There are some stats out there that show dollar values that different degrees tend to make but this is not the whole story. The best way is to talk to actual employers. Hard to do, I know, but if you keep the questions in your head you will find that you will bump into people whom have valuable insight and experience. Just make sure you ask for it.