I used to use Garmin exclusively for field trails, Sports Dog for marsh and upland. Now I train and hunt two black labs and have gone without any issues to Dogtra. 1902s for two dogs and the Dogtra 1900 for one. They have half mile range. Dogtra so far is the best system for me. For my pointers, I used Garmin but have gone to all in with Dogtra. Easy to get parts and batteries.