I bought the 9090/6 despite some bad reviews here and am very satisfied with the device.
Although the handling of the jug takes some practice but it's is just not a fully automatic machine that outputs the beverage at your fingertips.
I had bought the book at random by Siegfried Gronert "The espresso pot of Richard Sapper" about the history of the pot and wanted to finally once taste the coffee and this is really great.
The snap lock between pot and the water tank is awesome.
Have the pot now are about 3 years. First, on a gas stove and now on induction and both works great !!!