I've been using an averia collar for a few months now and I've been really happy with it. Their customer support has been responsive and the collar works well. The tracking seems accurate, battery life is decent enough I can go a week without thinking about it, and having a spare battery is super convenient. I love that I can just swap it out in a few seconds and it's back to full. The app is also good with a nice design. The last thing I'll say is I appreciate the option to do monthly subscription instead of having to pay a full year or more in advance