Hi Annie, Daisy is doing ok, we've just been noticing some changes in her behavior. Not sure if there's such a thing in dogs, but its kinda like a mental decline? But she doesnt seem to be in pain or anything, so i guess she's just slowing down.

As far as my mk4, i love it. No issues with it so far. Some folks say its too complicated for newbies, but the advanced features are mostly hidden behind menu sections that you can explore when you're ready. The basic setup and use are pretty straightforward. There are still features on mine that i have not played with, it does have lots of features.