Further to the comments about the Samsung Q1. A couple of years back I went for the ASUS R2H - it has a built in GPS. It's a shame you can't get it any more. Mine is now running Windows 7 with the GPS driving Memory Map showing half mill charts. I also use the excellent Skydemon planning software on it (great for diversions when landing away if you have a wifi or 3G connection). I also download my EDM 700 data directly. It even came with a 3.5 hour battery. Only major downside is the usual screen in sunlight problem. Shame how sometimes things sometimes go backwards rather than forwards.