I have owned two sets of these phones for a few months and am very impressed with their performance.
The telephones were very easy to set up, with the three units that came with the answer phone immediately responding to the base and needing no input from me. The additional handsets needed to be manually associated with the base unit, but this was very easy to achieve with the assistance of the instruction book.
The instruction book itself was not easy to interpret initially and I actually found that I could work out how to do things by trial and error using the phones and experimenting, which actually resulted in my being able to 'crack' the code to the instruction book itself. I think some things are easier to do by just getting used to the phone and discovering what menus are hidden beneath each key. An instruction book, whilst necessary, can make simple things appear to be more complicated than they are in reality. The phones are actually very simple to use.
I found compiling the directory of telephone numbers to be very straightforward, as was transferring the list of those numbers to the other units - much, much easier than I recall was the case with my previous phones. Once the initial charge is complete, the phones seem to last for an incredible amount of time before they need to be recharged, probably aided by the fact the screen blanks out when it is not in use, so there is no unnecessary drain on the power. The handsets emit what I would describe as an electronic purr when they need to be charged, which is a lot more pleasant than the annoying beeps that have seemed the norm with other brands of handsets that I have owned in the past. I also found the ringer tones to be very attractive and a nice change.
I have found the phones to be very reliable and am very pleased that I decided to purchase this particular set.