That doesn't correspond with my experience. I flew in a 480B about five years ago and was very impressed - so impressed that, a couple of years later I bought one. It's always flown very smoothly. T&B'd at each annual.
Never had any problems with parts and always found the factory very helpful. Mine shares a hangar with several other 480s and 480Bs and they don't seem to have any more issues than any other makes of helicopter.
The 480B may not meet the OP's criteria, but it's perfect for many private pilots looking for safe, comfortable, predictable handling - no vices and relatively affordable at an average 100 - 200 hrs pa.