Thanks, all, for your replies. More replies comparing the utility of Dedicated GPS Units to GPS on the Tablets would still be appreciated.

@General Antilles, I don't understand what you're saying. You're using both the N800 and an i-Blue 737 at the same time? (From what I just read, I thought the i-Blue 737 was a self-contained GPS System, not a GPS bluetooth transmitter.)

What sort of software are you using on the N800 when you do that? I have never used any sort of GPS unit, so my questions may be, sorry to say, uncommonly ingnorant. Can you use the N800 and Google Satellite with no other software, even though you wouldn't be on the Web?