Donor tissue vs septal cartilage?

Hi.. thank you for taking the time to read this. I'm considering my revision rhinoplasty after my primary left me with an extremely low/flat bridge and bulbous/boxy tip. In this case, which type of cartilage is superior for bridge "building"? Is there more risks associated with donor cartilage? What are the benefits of donor cartilage vs my own? Thank you in advance for your answers!