After having the benefit of on board GPS with my old PN-20, I knew I wanted another GPS solution in the Mercury. Preferably with a much larger screen than my old PN-20. The simple solution was to find some ‘cheap’ tablet with built in GPS which I could run a mapping app on. The extra flexibility of the Tablet means that I can also use it to extend my MP3 storage and run other applications like Torque. I settled on…