After a long comparative study, my choice fell on this model. Start with the minor drawbacks: it is true that the camera could be better, especially in low light, but for an extra device, the result is satisfactory and nothing says that Sony will not make an improvement photo processing in a future update. This has also been done quickly to fix an annoying bug: the top main speaker was working erratically after the Shift the OS. But this problem is solved. Derrnier moot point, if I find the look of the remarkable device, its grip is not more ergonomic. But nothing less than that all models of the moment that this rectangular style.
For the rest, the product is fully consistent with my expectations: it is smart, fast, efficient, responsive. A true personal assistant that seems to me reliable. The battery life is remarkable, which is a big plus for this type of equipment. I use also the rechargeable base that I find handy.
For all who are not subservient to the Apple brand, here is an equally powerful smartphone that runs Android allowing easy file exchange. Its chassis seems robust and waterproof and dust than average. I recommend it to my family.