My CX2 has been crashed many,many times. I can tell you that all in all it's pretty tough. I replaced the OEM blades with upgrade blade grips to allow them to fold back instead of break. I also use the xtreme blades because they're tougher, (they also provide more lift).
One thing that I have not read much about is the main gear on the inner shaft, this gear is too thin and flexable. I have experienced a lot of problems with this gear. I replaced it with a delron gear from www.flyrcrivesud.com and make sure the gears mesh closer and now I get better life, before, I was chipping teeth every time I crashed (one bad tooth will affect yaw).
My canopy is literly held together with scotch tape and a band-aid that some wise-acre thought would look appropriate, but it doesnt look like a noob's heli anymore, it has personality now.