very disappointing 69

I purchased the tomtom GO930T there a month and I regret my purchase. Considering the price and the reviews on the internet, I was expecting a high quality product. What a disappointment!
Here are some examples of the many problems encountered:
- Problem of updating the card via TomTomHome
- The very slow connection to the site TOMTOM
- Appearance of error messages such as: "the map or map version you are using is not compatible with lane guidance" while I use the map TOMTOM!
- (. Eg weather) online services are not stored so that it is impossible to return the information downloaded after page change without establishing a new connection
- Limitation of audio playback only MP3 format is heartbreaking
- The menu navigation is not optimized (eg, unable to return to a previous page)
- Significant limitation in the number and relevance of the POI (point of interest)
- Not always relevant routes !!! (With or without IQ function)
in short, I feel that the people who make these GPS do not try them.
The quality / product price is, in my opinion, largely overestimated.