I have a turnkey cartridge - I trust them more. Different pros: Great car. Many times they tried to use it as a puncher and, resting against opposite walls, drilled concrete. Of course, nothing came of this, because. understand this is not a perforator! But the drill withstood such loads up to a complete stop. It drills “light” wall materials and metal without any hassle. Due to the adjustment of the rotation and the “with gradual pressing” button, the machine is convenient and should be used as a screwdriver. An additional handle and an emphasis-limiter also happen, they are needed in the work. I did not observe significant heating of the case even at maximum loads. Different cons: After 3 years, the electric wire in the area of the drill handle failed. I dismantled the case myself, shortened the wire a little. Nothing else went out of order. Too bad there is no case. It is not very convenient to constantly fold the drill into the box and carry it from place to place.