I have just flashed KF2 today and so far I have noticed that it seems to be more stable.
I was having trouble turning on bluetooth. Using the status bar toggle would crash but using settings would work. That issue is gone.
Before I flashed my wifi had one bar and now it is full, where I could not stream radio for more than 30-45 seconds, not I am streaming indefinitely.
Overall it seems to be running smoother in general (animations, transitions...).
I like the good parts about having GB (netflix, minor enhancements) so I wanted to stay but was disappointed with the stability of the KF1 release. However, I think this one is going to fix the things I didn't like.
One thing I miss from KF1 is the CRT screen off Animation...oh wait!