After long search we have come to the Lenovo Yoga Tablet 2 (two weeks before the actual Verkausstart at November 2014). Main decision was the strong internal battery, the HD display, 2GB of RAM and 4 core processor. We are aware of the Wi-Fi version without W Cell taken function. Because you can attach to each Smartfon with some knowledge, this Tablet, and therefore übertall online (with only a Sim card, mind you).
Meanwhile, the Tablet in daily use and the battery is holding between 1 or 2 days. Why so little? Well our children have recognized the possibilities of this device immediately and gamble since the extensive 3D applications. The games are running very smoothly but are very current eating. Another advantage of the device is the allocation of different accounts (similar to Windows or Linux known). Thus, our children now have their own account level with predetermined Apps and very important without WiFi. Thus, to deal very effectively various unwanted purchases for "PlayStore Super Punke" to the games. However, this is possible from Android 4.4 on comparable devices.
So sometimes it's very frightening how fast komuniziert the device with the various apps and the Google headquarters and thus very quickly get to the information results (here is one example and called the E-Bay the Immunet app). Or just the TV App "Klak" makes the acquisition of TV magazines virtually meaningless. Since then, we also use the Google Calendar as a central calendar for all living at home terminal devices with full benefits, so no one can say he had nothing of this Ternim known (NSA & GCHQ sake ;-) this fun had to be now). All in all a great device. Let's see how long it holds out, at least so far there are no problems to complain. But these recessions are indeed very durable and supplemented.