I prefer the sound of a single BS2 to a single Balance. However, I absolutely love my stereo paired Balances. I have not heard a stereo pair of BS2s, but I was concerned that the side firing midrange drivers wound mess up the stereo. I can’t really put to words why I have these preferences, but I hope this helps.
I have the MK1 BS2 and think it’s wonderful, though I’m not sure I can justify replacing it at the new price. It’s over a grand more than what I paid for mine!
My MK1 BS1 though is sounding a bit rough these days and I would consider replacing it, so I hope that an updated version is in the pipeline.
GVA was not something that appealed to me so I’m glad to see that function has been removed. Who wants a house full of microphones anyway.