If real aircraft were as difficult to fly as radio-controlled lots of us would be dead by now.  I was a commercial pilot and flight instructor much of my life and have had students who never made a wrong move, probably since real aircraft controls are very sensitive, and provide immediate feedback.  Also, the pilot is always strapped into the aircraft facing the same way it's traveling, & simple concepts like left & right and pitch & yaw are easy to learn. 

Seeing these little Micro Mosquitoes after a few years out of the cockpit, they sure looked like fun, and they are.  But they also require a _lot_ of patience and practice to develop skills.  Micro Mosquitoes have counter-rotating rotors that make them more stable than some other inexpensive 'indoor helicopters' but they're still a challenge to fly.  I see lots of articles cussing the little machines and am sure they're from brats who crash the things right out of the box and call them un-controllable. 

The earlier models have four rather flimsy blades attached to each of two rings with little weights attached, and they're about as controllable as fungus gnats, requiring more patience and practice to get the knack of flying them, but they can be mastered.  It requires thinking like the pilot of a heavy aircraft who must anticipate every move and stay way ahead of the aircraft. 

An improved model appeared late 2007 and has two-bladed rotors not attached to rings.  They are easier to fly, more responsive to controls, and seem to stay in flight longer.  With the earlier version I've been able to a couple of 'cross countries' across the room at altitude for a few minutes.  Then, there's a couple more minutes of flying 'in ground effect' a few inches off the floor working on figure eights and other ground reference manuvers. 

With the newer version, I'm able to make a few flights at altitude around the house, and am able to fly closer to walls and furniture and thru dooors without Bernouli's Principle sucking the lighter-weight rotors into them.   

At first I thought the newer, two-bladed model  _without_ the rings would be more vulnerable to crash damage.  But, it seems to be tougher & the rotors don't get torn up as easily.   The rotor blades are heavier and larger and have survived several spectacular crashes into walls, chandeliers, and ficus trees.  

There's apparently a high rate of Dead On or Soon After Arrival issues with this genre of radio controlled aircraft, so plan to get more than one.  Three of the six (hey, they're cheap & addictive!) I've gotten on ebay & on-line have had some problems: the transmitter doesn't work properly on one; tail rotor wouldn't engage on another; and the on/off switch snapped off of the other so I use a little knife to switch it on & off.  But, that's provided spare parts and the suppliers have been helpful and now I've got three that are flyable. This is nice when there's a half hour of time to fly, a 'fuel' supply that's can't make but several minutes, and batteries that take a half hour to charge. 

I'd advise looking for the newer, two-bladed rotors with no ring.  Where the earlier models fly like gnats the newer ones fly more like the mosquitoes they're named & fashioned after and they are easier to master.  I won't be able to chase the dogs with these machines, but can reliably pick a flight path & follow it and land on the designated target.   

It took some time and practice to develop skills to control the thing even if it's coming at me.  Now I don't have to follow behind it to avoid loss of situational awareness & the accompanying crash.

Next, I'll likely be making this a hobby, where I can vicariously enjoy flight even with high blood pressure & no medical certificate.  I've used these little mosquitoes to develop some RC skills while waiting delivery of a Draganflyer SAVS, am hoping to make some $$ off the hobby with some aerial photography combined with 3D CAD, and am really hoping that the skills developed by flying the Mosquitoes will help save on crashes with the larger, more expensive helicopters I want to get as Spring gets along.