It is interesting to hear that your bone graft reabsorbed. Some patients have this outcome with bone (was it from the skull?), others appear to be doing very well.
In any case, personally, I certainly would prefer cartilage grafts in the nose for their predictability and low risk profile. As you may already know, cartilage from the ear(s) or rib are the most likely sources in revision/reconstructive nasal work.
Some surgeons still like irradiated cadaver rib cartilage. Absorption rate may be a little higher but still low.
Artificial implant options may include Medpore or Goretex. Main risks are infections and implant extrusion. Extrusion risk may be higher with Medpore therefore, Goretex may be my very personal favorite of the 2 choices. Infections can happen even years later and almost always require removal of the implant.
I would talk to your surgeon about his experience with Medpore. He may have used it in many cases with low risks. Reports of zero problems would make me wonder...