How hard is flying heli models?
Getting the hang of flying an R/C heli is a fairly challenging undertaking. It's like riding a bike: when you first start trying it seems impossible, but with enough practice it starts to seem easy, like second nature. It may take 5 or 10 sessions to get to the point of being able to hover with some consistency. Helicopters provide a long sequence of challenges, and the corresponding satisfactions of mastering them. After hovering, there is forward flight, nose-in hovering and flight, auto-rotation, aerobatics, inverted flight, etc.
What are some good helicopters to consider?
There are several good helicopters on the market. It's a bit like Ford people versus Chevy people: different people develop preferences for different helis. Good ones to learn on include the Hirobo Shuttle, Kyosho Concept .30, and Kalt Enforcer. An excellent although somewhat more advanced heli is the X-Cell .40. Also, Shluter makes first-rate R/C helis. Check out the local hobby shops to see what the well-supported helis are in your area, and if possible find where the locals fly. Hang out at the flying field for an afternoon or two, and see what the locals are flying.
Price to get going?

The helicopter itself will cost from $250 to $400 for a good starter heli. A radio will cost $200 to $450 or so. Gyro is about $70. Engine is about $130. Starter box, starter battery, etc. will probably be at least another $100. Price to get going?
The helicopter itself will cost from $250 to $400 for a good starter heli. A radio will cost $200 to $450 or so. Gyro is about $70. Engine is about $130. Starter box, starter battery, etc. will probably be at least another $100.