Should I form an LLC for investments or remain individual investor?

I am going to have farm equipment assets located out of state that will be generating rental income payable from a payer in another state.  The equipment will be purchased new.  It is a passive investment and I will receive a 1099-MISC for rents paid.  The payer has suggested that I may want to look into forming an LLC for the investments in order to take advantage of write-offs and deductions, particularly Section 179 and equipment depreciation.   I've read that Section 179 deductions can only be taken off "active" income from an LLC.  Since this is a passive investment, would this be worthwhile to form an LLC?  What additional deductions/savings/protections will I benefit from having an LLC versus just being an individual investor?  Without the LLC, can I still write off depreciation of the equipment?  Thanks for your help.