I don't think they are as good as they used to be. Maybe I've gone insane. Anyway, they're still my "go to" bits. I've tried competitor Dremel (more expensive!) and porter cables (HOOM!) and keep coming back to them. I use them every day at work to cut plastic, acrylic, PVC, wood and more. Hit it on the wrong surface (like a driven nail) and it instantly dulls. In any case, they fade pretty quickly. But as said, they are still superior to the alternatives. I miss the 25 and 50 packs. So far I haven't found a cheaper source than here on Revain. The same pack of 16 will cost over $27 at any major hardware store. The other doesn't even carry a 16-pack anymore.