I fly the Esky Belt CP pro with some metal upgrades. I joke that my experience translates to the following ratios, 1 hour simulation, 2 minutes flight, 1 hour of repair (repeat as needed). But then the high performance 3d copters will get you in trouble faster than a lot of the smaller and simpler models. I have a twin rotor chinook (non-coaxial) which is a breeze to fly, but it won't do barrel rolls, loops or fly inverted like the CP will. My worst crash had a total air time of 1/2 second. I power up and increase pitch, the helicoptor doesn't lift, I increase power and it still doesnt lift (but it does start tilting towards once side). I push the stick slightly sidewards until the helicoptor is resting level under power, increase power further, it launches suddenly/violently, goes sidewards then inverted and hit the grass rotor head first. (All in 1/2 seconds). The cause? One of the skids had hooked on a crabgrass shoot, so that side could not lift. Once the crabgrass sheared, with all the power and lateral stick, it immediately flopped over.
Storm titanium 2005 Elise with carbon fiber spoiler, BWR sway bar, BOE toe links, gPan2, LidBone, sector 111 wheel studs, Grey RAC Monolite wheels with toyo R1R, Team Dynamics 1.4 with Hoosier A6/R6s, Katana2 Supercharger, ECU with 265 flash. PPE headers w/decat, CEL angle eliminator, Silent touch catback, Rear Panel Eliminator, HKS intake, V2 fuel tank, Walbro255 fuel pump. HID lights.