Device with improvement potential, for beginners OK

We have a Nivona NICR 845 for two years and are very satisfied with the device.
Lately, it always came back before the coffee spout was blocked on one side and are difficult to clean or remove leaves, hence the desire for a machine with removable and easy to clean outlet.
I was at MM attention to the machine and was thrilled it was originally purchased.
The initial start-up is easy and even for a newbie no problem to program the machine with water hardness, temperature and flow adjustment succeed easily via the touch screen.
Now for the negative points of the machine:
- No personalized setting of the mixing ratio in the dairy drinks (only total quantity in ml), Siemens is the ratio of coffee & milk before - Unacceptable
- The coffee spout is too narrow and a coffee variety with good crema runs this "over" at the sides over, various attempts were Mahlgradeinstellungen
- The coffee has a sour note, coffee roaster from private and is of very good quality / taste in the Nivona very good / different Mahlgradeinstellungen were tried
- Cup illumination would be in this price range is definitely in there too, but only the top model

Positive points:
- Nice touch
- Silent grinder
- Good milk froth
- Heated very rapidly after switching

We have returned the machine again, the lack of personalized settings and in our opinion, "sour" coffee were a KO criterion and we continue to use our Nivona.