Compared to its predecessor, the new device is much simpler constructed. Instead secured by a door, the bottle is now screwed more or less free-floating. That appealed to me a little better in the old appliance. But on the functionality you can complain anyway in any way.
The function of this bubbler is perfect and I think we will again have many years of fun at the reliable device. Opposite the old device we also need significantly less CO2. It is much more economical. The water tastes relatively neutral (despite the plastic bottles). More than one day it is eh 'not in the refrigerator.
We are very pleased with the SodaStream bubbler.
Note: Unfortunately, the supplied carbonic acid cylinders are not compatible with the old bottles. These can be screwed, but it is not CO2 out (better not try - the thread could possibly suffer.).
Addendum (07:12:14): We use the bubbler now several times a day for over a year. So far, no problems have surfaced. The device is working properly, as the day.