Have had my FedHill for a few years now and give it an A+ 100% success rating on all size tubes and all materials including SS.
Never had a bad flare with it.
Ridged, Imperial-Eastman, Snap-On, Bluepoint, KD all were a wast of money, many failures with hundreds of test samples, in fact most of the double flairs that I've made with them resulted in off center unusable parts.
DG
