set up a LLC for investment properties?

I live in NJ. I own 2 properties in PA, both with mortgages. Both are investment properties, in my name as the sole owner.

Would it be beneficial to set up a LLC for accounting and tax purposes?
What kind of LLC should I establish?
What are the advantages and disadvantages of setting up this LLC vs. leaving everything under my personal income tax statement?

Thank You.

Thomas Carlen, banker, NJ