Bought these bits and bought a similar set of Doinshop bits at the same time. I would call it a slightly modernized version of Doinshop. The shank of the largest bit is slightly larger, and the bits themselves appear to be made from slightly harder steel, allowing for slightly longer life. Not a huge difference, but enough said. They're more expensive, almost twice as much, so the cost of a drilled hole is likely to be similar. I typically use them in the workshop or where I feel I need a…