Garmin Astro DC50

It's the latest and greatest. Some will sell their soul to have em. Others will wait till the bugs get worked out. Just like the other collars once the bugs are gone and a little knowledge on what works and what don't they will be fine. I have had little issue with my 40's. I know folks running 30's with limited issues. I suspect in a year the 50's will be just as limited on issues. The addition of the Russian satellites will fix issues people now have with the 40's and 30's of losing GPS in thick cover to a certain degree. Improved antenna will be better than current factory but may or may not improve over aftermarket long range antenna. The jury is still out on how good they will be until the average joe gets some time with em.