Hijacking the thread to ask what would you choose as a 12" replacement for a X240. It still works great (using it now) and Linux support is perfect, but I have the chance to buy locally refurbished X270 or X280 devices with 1080 screen at a good price. Are they the best upgrade before going to different models? I believe they are also compatible with the docking station and bigger battery I already have on the 240, which is a bonus. Thanks!