Anyone knows about preferred stocks?
I don't like them. Your dividends may be "guaranteed" at a certain percentage but unless it's participating stock, you can lose out when the dividends declared are greater than what is owed to the preferred shareholders.
Also preferred stock is usually "callable" which means the company can force you to sell your shares back to them whenever they want. You'll get the current market price but you won't have the option of holding onto the stock as long as you like. You will also have no voting rights which you would have with regular stock.