Full eco, but the rest ...

I bought the phone just two years ago due to the full-Eco function (at that time was pretty much the only device that it had).
The operation, however, is annoying. A normal thing as speed dial keys was the developers probably unknown (I could not believe it). You have to go through the phone book and depending on press vieeele keys.
If one listens to a signaling message on the answering machine with a handset, this continues to be signaled to the other handsets: why? At the base of the interception of Nachnrichten not always work: press play button, you hear a beep and a message, you have it with the handset making. Misdemeanors bothered me (the range is modest). Compared to my old, solid Gigaset 3000 Comfort clearly a step backwards. Therefore, I am now back on Gigaset (SX810) switched.