After me, my beloved, 12-year-old has left Gigaset 3000C, I had to find me a new one. My choice was the S810A. Synchronization with Outlook worked with me not - under both XP and Windows 7 came both times the same error message and also in the Gigaset forum I could find no solution. It is very comfortable to hold, the processing appears qualititiv quality and also the possibility of a headset to be connected via Bluetooth, I find it very good. The standby time is several days even when Bluetooth is activated permanently. A key for me plus point is that the device can be operated with normal AAA batteries. Regarding the speakerphone, it has four different profiles; in the description, the term "unsurpassable hands-free function" used; However, it comes nowhere near to the quality of the Gigaset 3000C. Unfortunately, you can store any address in Contacts. Perhaps there is some point a firmware update that the above-mentioned (subjective) compensates disadvantages, it deserves 5+ stars; currently only four, but I'm very satisfied with it, and it would always buy me back, because in my opinion it currently has a very good value for money and also convinced of the processing.