The Globalsat DG-100 is the first SiRFstarIII data logger I've had the opportunity to evaluate and is in fact the first data logger to rely on the most powerful GPS chipset available.

Many users have been waiting for such a data logger to appear since the first SiRFstarIII receivers came out in early 2005 as they typically get used in unfavourable environments (in a backpack, glove box, clipped to a belt, etc...) so the higher the sensitivity the better. Previous favorites included the SiRFstarII Royaltek RBT-3000 or Delorme BlueLogger that were really Bluetooth GPS receivers with an added data logger feature. Not so with the DG-100.