Thus, I wanted this time to invest to have a little longer from the drill bit more.
The fact is that the drill properly, despite the fairly low wattage of 850 has steam and it has been able to approach any of underground house with me. Whether in normal walls, directly in bricks or in concrete. Everything worked perfectly and the holes were very clean.
Dust extraction I can only say that it works partially. Drilled to a normal hole in a wall, so it takes up most dirt. Drilling but up in the ceiling, so the most dirt falls through and without additional vacuuming preferably into his own face ;-)
The supplied drills are in order. So far I could not see any problems with this.
For home use, it is a super impact drill. The extra charge for dust extraction you can save, however.