Really depends with RM.
Sometimes I've seen smaller wires and leads, not as good of rewind on the coils etc. However everything I have gotten for myself and told them to take their time and do properly(not that one should have to allude to doing things properly) I always get back quality products.
I did however have a recent issue with a Yammi Triple stator, the wires coming out of the stator where tied incorrectly(wrong spot) and were hitting the flywheel. Sled ran fine for about 10 minutes then started acting up.....pulled apart, found issue, hour later I was back to ripping around the field. RM said they would warranty it, but for the week turnaround time(I waited about 4-5 weeks for the original) I decided to fix myself and no issues so far. Knock on wood.