Prior to this drill used Metabo. It's cheaper and a reputable brand. Good or bad, I can't say. He worked with a manual milling cutter (the dunce himself, only after the damaged drill read that it was impossible to use it with such speed). "Planted" for ten holes. Then it only smoked and dusted, drilling stopped altogether. Sharpening is useless. In the first hole after sharpening, the same thing begins with a drill. Apparently, something happened to the surface structure at high speeds. Or the steel is bad. With Bosch, I started doing everything right, so only positive emotions remained. And the difference of 700 already seemed not so terrible.