Does anyone have any experience with the garmin Astro 900 or sport dog tek2.0 collars

[walks with loud stick]

I'm looking to purchase a tracking collar for my dog. I'm torn.

Sport dog claims longer range. But it seems from my internetting to be prone to issues.

While the garmin claims to have somewhat less range but less problematic.


Then I'll find complete polar opposite experiences.

Anyone have any input?