I have a blade CX2, and a blade 120SR, both are very pretty forgiving, much more control than the havoc, they are full function Heli's
the CX uses counter rotating blades to keep it stable, and to makee the rudder work the top or bottom blade slows down, it has elevator,
aileron, rudder (bank, and pitch control, yaw.) throttle controls the altitude . The 120SR, is a fixed pitch single set of rotors, with a tail rotor for
rudder control, The 120sr is more maneuverable same 4 channel controls, and I can fly it outside in more wind than the CX. Anytime I can't get a day
at the field i will charge the batteries for the blades and get my flying fix, they can't do aerobatics, or 3d. but both let me enjoy flying from my sofa.
and if want to annoy the dog or cat, you can do it with precision.