The micro helis are very difficult to fly, but as far as the learning curve goes for helis vs. fixed wing, I would say one isn't any easier than the other. Why I say this is I teach people to fly both and in a way, helis are easier to teach/learn than fixed wing. For proof see:
http://www.amadistrictii.org/column/...9%20Column.pdf
I have no problem of letting anyone fly either my heli or any of my fixed wing aircraft, even if it's just to let them get a good taste of RC hovering/flying.
CCR
AMA# 120734