Dunno-some would say so I guess. But I'm using a DX6 system which seems to be immune to the ordinary glitches that used to plague us on 72-75 MHz. Plus the transmitter antenna is only about 4 inches long--a real feature for us living-room hoverers.
But here's the real reason I'm using HS65HBs instead of the metal geared ones--the difference in price is such that I could strip out and replace three sets of Karbonite gears for the same money. Or buy an extra servo--3 65MGs = 4 65HBs.
Those servos are so strong that for a little bitty heli like a TRex or my "Heli-Rex TMax 420" something else will probably break or bend before a HS65HB will strip. If I put a 65 MG on the tail I could probably fly the heli under water.