I've used both. I agree that mechanicals add an element of failure to the set up, and I can't argue that simple is better. However, I think reliability is a consideration, and if you can find a reliable mechanical, I don't personally take issue with it. I used fixed blades exclusively for the first few years I hunted. Then I tried the Rage 2 blades, and after as many successful shots and no failures between myself and my two brothers, the reliability has proven itself to me that I will continue to use them. Sure, I'll give the simplicity point to the fixed blades, but I love the extra cutting diameter I get with the Rage. I shoot as perfect as I can, but there have been a few shots where that extra bit of cutting has helped. Like we all say over and over, it's about personal preference and whatever you're confident with. I'm confident with the right fixed or mechanical, but give the edge to my preference of mechanical because of the extra cutting capability, as well as not having to worry about planing that some fixed blades experience in flight.