What a gorgeous dog. Thank you so much for the list. 18 years is a remarkable lifetime.
So one question is you said bossy. Bossy is one reason I wasn't considering another Aussie. They are so bossy.

But if a border in general is bossy too than I'm back to the same issues.
My Aussies are bossy, wicked smart with a hilarious sense of humor. They are Velcro dogs. They don't have the need to work like a border collie does. It's the main reason I switched to Aussies. Now you have me rethinking it all. I guess in the end I will get one of the two.
You have given me loads to think about. I really appreciate it. And your dog really was gorgeous.