30 Nm and the rather small dimensions were decisive for me because I use this in addition to my Makita and my very universal Festool. The drills and bits are okay, but high quality cost as much as the entire electric screwdriver set. When bits in my opinion is worth to not super expensive, but simply rational rich, they are subject to wear product. The power they should, however, already able to transmit. So, which are expensive and not necessary the cheapest bits are hard to use. In wood and steel drill bits drills it is worth once to jump over his shadow and to buy the best. But such a thing exists only in specialist shops!
The suitcase and the bag has also been a reason for me. All my units are located in suitcases or Systainers (perfectly!), And so I wanted to have a small (er) pocket, for fast times just use. Of course, the screwdriver is in them not so well looked after, like in a solid case. But such a bag is just much smaller, exactly what I wanted.