You only live once, personally I would pick the one that offers the most money. That way, if you find it boring you can always save up enough to live off of a year or two and then do your own thing.
What is your alternative here? Keep getting exploited and keep being frustrated? You need to consider yourself in, say, 20 years. Consider you decided to stay, how do you feel in 20 years? Consider you decided to try something else, how do you feel in 20 years now?
