This is an interesting question. I think it depends. Corporations have their advantages while start-ups have their own advantages. It depends on what you are looking to learn and gain from a job. Also, as a soon-to-be-grad I am looking for an entry level position so my goal is not to stay at the company for 20 years, but rather to learn and gain as much experience as I can, and to build connections. But I agree with the underlying premise of this question that one should look into a company before applying, but be honest with yourself what factors matter. Also important to be knowledgable about finances and on a personable level for one to be able to invest wisely.