I really want to know this, should I be an Industrial Maintenance technician or an Aerospace technician?

I am trying to decide what to stud in school. I know that I want to learn a trade but I do not know which one. I am interested in both but I can't decide between the two. I have looked online but I can not find the information that I need. I can't find what I want on BLS.gov, I can't find exactly what I'm looking for. Which one would be the best thing to learn, which one would be more comfortable, which one pays the most?? Which one would give me the most room to grow, which is going to be in demand the most, which is going to place me in the most comfortable work environment? These are the questions that I am hoping to have answered. I have thought and thought about which trade to learn but I just can't decide on which one to do, I could use some advice from others! I know that either one would be good but which one should I do? If anyone has any useful advice please help me out.