Kaizen makes a workable track for the late production Tiger I. Model #30956, they are plastic but the links go together with a metal pin making them fully workable. I used them on my Tiger I, Jagdpanther and M4 Sherman. I like them and you can get them anywhere from $22-$30 dollars on e-bay or Hobbylink Japan.
They don't have the weight of metal but being fully workable they sit down like metal tracks. Big improvement over Bronco, AFV, Masterbox and other low cost suppliers.