Losing? It was stolen.
The "tracking" ability is a pathetic joke. The remote wipe? Useless. Those ARE important factors of quality. You may not have any issues with your Sammy but I have huge issues with the HD7. NoDo did nothing to help any of the issues I had with the phone. The absolutely only thing the HD7 has going for it is the screen size/res.
I doubt Mango will bring any resolution to the WP7 platform and without a standardized release it will end up exactly like WP6 and carrier support only.