In my area there was one Hung Gar school, came from a good lineage, instructor was very good, and from working out a few times and sparring them my rating of their system was good. Most used powerful hand and elbow combinations with low, strong kicks and worked angles well and would get inside and continue to strike and attack. The one guy was very much into iron training and would take a shot to give two, so to speak.
But again, it's just like any other style. Those that train with intent such as the school I mentioned is good. Other Hung systems more into performance and forms probably not so much. Like I said, this is with any martial arts system.
"The hero and the coward both feel the same thing, but the hero projects his fear onto his opponent while the coward runs. 'Fear'. It's the same thing, but it's what you do with it that matters". -Cus D'Amato