I agonized over buying the MKII when it was first released. There were many times when I had the MKII in my Sweetwater cart, but something stopped me from finishing the transaction. I could not justify spending $1700 on another Kemper that was going to get me another 2-3% (or even 5%) closer to the real amplifier.
I am happy where I am now. I really don't need it. I absolutely love my Kemper (MKI), and to this day, I still do. I spent the time to learn it, and it paid off, allowing me to to do anything I wanted.
I still have several amps, and I honestly don't miss lugging them around. The (original) Kemper gives me everything I need. Since the day I bought mine, I have been thrilled with it, even before Rig Manager was released.
Now with NAM seemingly taking the lead on getting closer to the amp sounds, it seems like I made the right choice. As I stated before, I am happy with my unit as is. Nothing comes close to the effects that I have in the Kemper. But I will be keeping an eye on NAM as it will only be getting better as time goes on.