I use the V4:s mostly because I wanted compact speakers on both sides of my
DAW monitor. After one year of using them I think I got the hang of how to mix in
They sound a bit small/narrow when switching between different pair of speakers,
but if the mix sound good in them it sounds good in other bigger speakers also.
The V6 sounded very good in the store and I will probably buy a pair of those in the future.
They are probably much more easy to mix in, to make it sound good on themself, but I dont know if they are upward compatible to other speakers in the same way that I feel the V4:s are. Perhaps they sound to good?