Since no one else has responded I guess I'll stir the pot.  Get an iPad.  I don't know what your poor experiences have been but they manufacture rock solid hardware and very stable software.  There's a reason so many things use them.  For the record, I have iPhones, iPads, a MacBook, Lenovo Windows PC laptop, and three PC desktops in the house.  They each have their place. iPads have been rock solid in my tractors, combine, and sprayer.