Just to mention iPad, there are two wildly competitive apps for POWER pilots. WingX and ForeFlight. These apps are fantastic for planning. For a reasonable yearly fee, they have seamless sectionals for the entire USA, weather, airport data with zoomable satellite images of the airports. WingX logs flights in a non IGC format. But these apps are very good for preflight planning, learning the area with seamless sectional, getting notams, TFR obstructions, moving weather on top of the sectional etc etc.

I bring my iPad in the cockpit and leave it off most of the time. But in areas I don't know as well, I check it once in a while to make sure I'm clearing airspace, or as a backup is XCSoar goes south. The built in GPS shows your location of course.

I love these apps/iPad for planning, not really a cockpit solution for lack of soaring specific apps and it's size. ... Aaron