1. Weight, power are perfectly combined for long-term operation of VOVA K. with ceilings and a 6 mm drill. 2. The ability to have a keyless chuck adds the function of drilling a tile with a 4-sided pen with a blow. Significantly increases speed even with a blunt pen. Few of the ceiling fans have tried this function. This used to be done with a drill with a blow. But a blow on a drill does not last long. 3. A new head in case of wear costs 1900. Barrel repair on Hitachi will cost 3500. + repair time. 4. Metal clips on the case close clearly. I hope they live long. 4. I decided to switch to Dewalt with punchers. Experience with VOVA K. with Makita - 3 years, with Hitachi - 7 years.