Going through all the posts in this tread I agree with the majority of what everyone is saying- that I would not turn down a position based on the type of company. I would focus on the role and the kind of experience I can get from the role. The company’s stability would matter to me if I was being offered a partner or Chief position but otherwise it would not matter much. I have worked with a sole proprietorship company before and with a c corp as well. I did not see much of a difference for me as an employee.