If I had the money, I'd seriously consider cloning Kaiser. To have the chance of having another heart dog like him again, and train him knowing what I know now and not making the mistakes I made then, would be too tempting to resist. Even if just a pipe dream, I'd be tempted to try.
I would have to seriously consider the soul issue though, and that would make my final decision. I still can't decide if I believe dogs and other animals have a soul or not... part of me does, part of me doesn't. If they don't, and the end product is a result of genetics + environment, than indeed cloning a dog should produce something similar, or even better, than the first one. But if they do, and the existance of a soul impacts who they are, it would be an exercise in futility.