I believe my answer would change based on the characteristics of the company I am looking to start up, but in general I would be most comfortable starting up a Limited Liability Partnership (LLP). The advantage I see with the LLP is that there is less liability on each individual such as myself because there are more owners, but there are not an insanely high number of investors such as in a Limited Liability Company (LLC), where now there are hundreds to thousands of investors to worry about and deal with. The LLC is straight forward where each owner has a certain portion of the company that they paid for, so I can have the choice of investing all of my money or just a little bit of my money and still have ownership. The opportunity to share risk among others is a great Pro as well because it alleviates stress from being subjected to all the punishments that you may run into with a Sole Proprietorship or Partnership. Some of the negatives that I can run into with a LLP is that I do not want one owner to have power to make decisions that would affect the rest of the company and engage everyone in a binding agreement. One partner now can make a very poor decision without consulting anyone else, and there is nothing the other owners can do because of the binding agreement. There is also the possibility that the company may not be recognized in a state that you are looking to move to, which can make growing and expanding difficult and can affect your initial start up location if the state will not recognize you, forcing you to move out.