Our "start/die" symptom has not happened once since the instrument cluster circuit board replacement was done six months ago. We went through the BCM route and various other repairs over the course of a year before getting to the right diagnosis. This was all done at a Dealer. That being said, unless you know a good mechanic familiar with this car, I'd go to a Dodge/Chrysler Dealer with the information from this thread and have them start their diagnosis with the instrument cluster.
Others in this thread had their circuit board repaired. Perhaps they could report how long they have been trouble-free since the repair.