There's so much nonsense written about so many things on this site these days. I never found a scary helicopter in quite a few years and more than a few hours. Yes, when I was a (very average, inept) student, they all seemed difficult, but later on I realised they were all just helicopters with their own individual quirks and problems. I was only ever scared twice, and each of those was by people, not helicopters. I realised after not too many years that the most unpredictable, unreliable part in any helicopter (or flying machine) was the MMI (man, machine interface)