Tinker Boadr!
Advantages: Bought this box to be able to join the RK3288 Miqi/Tinker Board Linux crowd. Hope I can boot Linux soon. The hardware used in this box (also found in Chromebooks) is probably the most powerful ARMv7 hardware ever, and it'll definitely stay this way. Same for the GPU. The Android part is fully usable, albeit slightly outdated. Good WiFi performance thanks to the external Antenna.
Limitations: Android 4.4 and no-dual boot firmware available. Other than that ,the box is a great piece of hardware.