Also, in most states you don't have to disclose who the owners/shareholders of the C corp are - as opposed to an LLC where you have to, in most states, identify at least the managing partner.

A C corp seems a pretty deep crick for a smaller operation that's not planning on growing employee wise or has patents to protect or operations that put shareholders at risk.The 1031 is perfect for "auto expanding" your portfolio. 

"The S-Corporation files an informational return (1120S) and any profits or losses “pass through” to shareholders who pay income tax on their personal income tax returns.

Organizations have to adapt and evolve in order to provide their investors and shareholders returns.

My wife and I are the only shareholders of our mgt s-corp that receives quite a few sec8 rents as the LL. 

@Joshua DaviesA lot of wealthy foreign individuals become shareholders in a Corporation who ultimately invests in the partnership fund.example.Joshua Davies, LLC has 2 memebrs in his LLC; Joshua Davies and International Corp, IncThe shareholders in International Corp, Inc. are International Investor 1 and International Investor 2.When money is distributed by the Corporation to the investor - it is no longer rental income; it is dividend income.The Partnership is now not required to withhold or file form 1042 since the member is not a foreign partner.The international investors avoid having to file a US tax return because they are receiving dividend income instead of "rental income"There are some pros/cons associated with this approach.Possibly more administrative costs(registering of corp), filing of corporate tax return etc.however, many foreign investors like this approach.

Our cost of money is a tricky question since there are multiple shareholders with a pretty wide range of equity return expectations.  

With LLC ownership comes a more expensive commercial fire ins. cost, which your LLC attorney should be able to find & bill you for (remember your just a share holder, no operational involvement). 

It can distribute earning to shareholders in the form of dividends.

It would be only myself as a shareholder.