I have shot Nano Pro RZ for several years now for all of my outdoor tournament shooting including both USA archery and NFAA national events. I manage to beat them up pretty good and have to replace the nock pins that bend when struck hard, but rarely do I break an arrow, the bulldog collars do their job. I also use the tool steel points and have found that they are either straight or broke, they do not bend. If the point is broken just remove the old point shank and replace the point. They are that tough. The components and shafts are so consistent that you get 12 usable tournament arrows with each dozen, I have not had to cull arrows to get consistent arrows. I used to check every component for weight but they are absolutely consistent and even without testing components I get a dozen arrows within 2 grains. They are awesome in the wind, the small diameter reduces the drift to one half the drift of larger diameter arrows giving much better consistency.

Full Disclosure : I am a Carbon Express Pro Staff Shooter but the opinions above are from my experience shooting Nano Pro RZ arrows. I recommend them because I use them and trust them.