Anybody using this system and how is it compared to the garmin systems

Jason I have both garmin gps an sportdog training collar, but they are separate collars. I like the sportdog collar it has a beeper mode don't have to use shock mode once dog learns beeper it works great, 2mi an 1/2 mile works great. Garmin gps great until about 3yrs then try to find repair,? Buddy