So I gave myself a Bosch Uneo 10.8V. I had previously randomly contact with the Uneo Maxx 18V and was by her so much that I have ventured to buy the "smaller" Uneo. And I was not disappointed! The Joule 0.1 is less than at the Maxx, I have not felt, but the machine is so small and light that I even manage to alone to drilling (with right) and with a vacuum cleaner to suck the dust from drilling (with links). :-)
The only downside, I do not want to conceal, is the battery life. After 5x 8mm holes in the concrete required the machine that the battery should be recharged. I do not value the small Uneo from because I decided -as mentioned- deliberately for the smaller version. And since I have a compatible replacement battery from other Bosch tools, it is no problem at all.
The batteries are also charged quickly, which only takes an hour.