I've used them the last 3 years. But another dozen this weekend. My impression is they are tougher than many of the shafts outthere. I've had good luck with them and will continue to use them. I've noticed 2 things that merit mentioning: 1) If you are using a really hard cammed bow, their spine charts can be a little light. For example, with my 70lb Bowtechs, I needed to shoot 7595s rather than the chart recommended 5575. The other thing is to shoot and keep track of where each arrow tends to hit compared to the rest. In any dozen arrow, I find 1 or two that need the nocks rotated or replaced to shoot with rest. Not a big deal--just something I've discovered after shooting them a few years. I've never had to scrap an arrow because it wouldn't shoot--I have had to toss 3 or 4 of the nocks that came with them. In my view, the shafts are so much tougher than some of the others out there that it is well worth the modest inconveinece and expense. When I last shot other brands of arrows, I wasn't profficeint enough to have picked up on such a situation so I can't say I've seen it with other brands. I strongly suspect that would be the case.