I have recently bought a MASH 4077th helicopter.
Trust me they are awsomely hard to fly IMO, on my third set of rotor blades, best £90 ever spent ace fun so rewarding when you get it right, trouble is I have not been rewarded yet!!
I watched the man in the shop fly it around like it was putting him to sleep with being so easy.
Hand eye co ordination is needed BIG TIME.
Took me over and hour just to get it to fly 1 " off the floor carefully, then the table leg jumped out at it and got lots of marks on it, and ANOTHER set of blades needed, other half not impressed when she saw the table legs though, "glad you don't fly the real thing she said", bloody cheek.
I think when you have learnt they are easy it is just learning that is hard, and expensive.
My advice is go and get one, ace fun, mine is contra rotating blades on mine, as these are "supposed" to be easier.
tabetha