Chris - you're the master of all things geowanking right now....my wife has offered to get me a GPS device for XMas. I initially joked and said a Tom Tom but when she said "OK" I said...."Oh, let me do some research".

You know my interest in having complete control in possibly building apps and pulling out as much data as I can. Are you aware of any devices that have the most open platform for user-developed applications and maybe has a decent, customizable map app built in.