I quite like my NVIDIA Shield, 8", Android, decent processor and graphics, micro SD card slot and comes in two flavours - WIFI only or simmable
Not the cheapest probably, but mine is about 4 years or so old and I've no need to replace it yet. I typically use it to read, play a few non-serious games (solitaire, jigsaws etc) and download and watch stuff from BBC I PLayer, I can also output it through most modern hotel TVs with an HDMI cable.
