The important factor is not the type of corporation. What is important is that all the corporate formalities are observed. All legal documents must be filed. Bylaws, minutes, etc. must be kept up to date. Bookkeeping must be done under accepted standards, etc. Also of prime importance is that the officers, employees, shareholders, etc. treat the corporation as a corporation, not just a shell.
If there is any reason to suspect that the protection of assets against claims against interested parties is of special importance and that there is a reason to fear invasion of assets, it is a good idea to hire a corporate attorney to see that the formalities are observed.
