I don't know which I like better, good quality cobalt drill bits at a lower price than some HSS drill bits. In addition, drills can be sharpened well with my Drill Doctor. I gave one of these drill bits to my neighbor and he plans to order a full set of these bits. He owns a small business and counts dollars so I gave him some of these and he loves them! I didn't break any even drilling through the old welds. andy