I do a lot of track logging and geotagging of photos - every trip, in fact - but I have never used them for navigation before and am not likely to start doing so outside the vehicle. In the past, I've been using GPSed on my phone for this purpose, but it is an extremely clunky and buggy program (both on the phone and the online-ONLY geotagging feature), and the phone's GPS is very power hungry (a problem on long trips). With these in mind I went searching for something super small, with great battery life, that could log a trip uninterrupted whilst simultaneously being plugged into or removed from the netbook for vehicle navigation.
After a lot of reading and a conversation with DaveK on his setup, I was going to go with a smaller eTrex unit so I could easily toss it into my pocket for hikes or rides. It was still bigger than I wanted though, and would be seriously limited in charging options (AAA batteries). I decided to search one last time for a solution when I stumbled on this:
http://www.amazon.com/Q-1000XT-BT-Q1000 ... 679&sr=8-1
Qstarz Q-1000XT Travel Logger
It is about half the size of a Garmin eTrex, has no display to break, runs for about 42 hours off of a generic Nokia li-ion battery (easy/cheap spares), recharges via USB (car charger included), tracks for about a month (assuming 10-hour days at one mark every 5 seconds), and will share itself to a computer over USB and/or Bluetooth without affecting it's own built-in track logging. The included software is easy to use and geotags happen on the computer, instead of over the internet, so it is much more reliable. The tagged photos can then be uploaded anywhere they need to go either in the software or via the traditional methods.
I've only had a little time with it so far, during BorregoFest, and none of it was with a computer for navigation. Power-up to location fix was about 15-20 seconds, and seems to work just as well on foot, in a vehicle's glove box, or in a building. A small slide switch on one side sets the device to "off", "nav" for computer USB/BT navigation only, or "log" for simultaneous internal trip logging and computer USB/BT navigation. I used "log" during the Truckhaven and Lost Ship of Pearls run and left it in the console under the dash. The resulting tracks were flawless, and I've been able to zoom in to my geotagged photo locations on Google Maps to find everything right where it should be. The only other control on the device is a small red button on the top, which can be used to mark points-of-interest in the track log. There are 3 LEDs on the top surrounding the button: one blue for Bluetooth, one green/red for battery, one amber/red for GPS fix (red flashes when marking POIs). It is also capable of audio feedback, which makes it easy to flip on/off and mark POIs while driving without taking your eyes off the road.
When I got home I set up GPSgate and plugged in the Qstarz via USB (I hate bluetooth with a passion). It immediately popped up and installed, and GPSgate worked perfectly with it as tested on Overland Navigator and a few other utilities I have. As an added plus, the software that came with the device to change it's settings work just fine right through GPSgate, so there's no need to shut GPSgate down if you need to change settings in the device. Log point rate, audio feedback, motion detector, and a few other settings are all handled via the software only.
I'll be testing it out in greater detail along with my shiny new copy of Overland Navigator on our Mojave Road trip next week, and will get a proper review up when I get back.