Posted for Robert Mitchell <rmitch1@hughes.net>:

 
 Hi Chris,
 
 My iPad is 64GB. The disk capacity is 58.17GB, the difference is the
operating system. Foreflight uses 50.7MB, including AOPA data, all US
sectionals except Pueto Rico, AK,HI. All low and high IFR charts, all terminal
proceedure and approach plates, etc.
 The built in GPS is usually accurate to 6-15 meters, and using it on a
kneepad in my twin comanche I have never lost signal.  The
blog.foreflight.com, just recommended an external GPS as being more reliable,
but, either has a wire or Bluetooth connection and 2 models are Apple
approved.
 
 I have 6.2GB audio (about 80 CDs, 2.8 GB photos 4.9GB Apps and 6.5 other
loaded, giving 39.2GB free.
 
 I bought Wingx and have all the approach plates (georeffed), and Air Nav Pro
to try. Also a bunch of business stuff, and weather apps.  None are needed
unless you want geo-referenced approach plates for situational awareness,
kinda handy.
 
 I would wait for apples update before buying, the 2nd edition should be
better. Rumor is a OS upgrade is soon coming.
 
 The blog, above, has a lot of useful info.
 
 Bob
 Sent from my iPad