A comment
I have simple requirements for a drilling machine: power and performance. The Total HD010 rotary hammer bought from a year ago instead of the stolen perforator completely answers them. A solid, piston system is impressive, because the impact is stronger than that of advertised systems. I drive the unit for 10 hours, when there is nothing to interfere with the solution, I safely use it. A tough attitude tolerates without breakdowns.
However, the character constantly shows: at high speeds, it is desperately vibrating, giving such a return that it is worth the effort to keep it. Once distracted, loosened his grip, so he instantly pointed out bruises. Overheating is again afraid. I feel it begins to lose strength and smell unpleasantly, I immediately turn it off, I give it a rest. In general, a great perf, but only for masters who know how to deal with the instrument.
pros
inexpensive, productive, powerful, durable
Minuses
strong vibration, increased sensitivity to overheating