There are a number of GPS models on the market. In May 2008 we conducted a poll to see which GPS models were the most used by members.
The most commonly used GPS models were:
Garmin Etrex 17%
Garmin GPS 72 16%
Full results and the poll available here: http://www.akff.net/forum/viewtopic.php?f=3&t=15936
In addition to the above poll, another poll was conducted to see if people were considering purchasing a sounder, gps or both in the near future: http://www.akff.net/forum/viewtopic.php?f=3&t=15998