A comment
I became the owner of the TE 2 puncher from Hilti, about a year ago. The hammer drill is not bad enough, it consumes an average of 350 watts. The strength of the blow in the instructions indicated that 1.5 J, but in fact it seems to me a lot more. For verification, I compared his work with the productivity of 4 Joule Makita, no matter how I tried, I did not notice the difference in work and power of the blow. Together with Makita, he drilled in 400th concrete, drilled concrete with a bang, and most interestingly, the TE2 puncher for all the work did not heat up so much, which indicates the reliability of the assembly as the quality of components.
Particularly pleased with the presence on this puncher of the so-called and beloved by the builders "ratchet", which does not serve as a "fuse" from turning the punch before it is "bitten" in work. As far as I know, these ratchets are put only on expensive brand models. For all the time of operation, the puncher worked with dignity, the only thing I did was change the brushes.
pros
the presence of "ratchet", excellent performance.