Upload & Sell: Off
seems like most everybody that has one says it is very similar or identical in performance with rangefinder wides to the 5N. so the 21 biogon should perform well, but still have a little color shift and corner smearing on the 6.
i think the reason your not seeing many people with the 6 here is that most people who are interested in the NEX already have gotten a 5N or 7, no need to jump on every upgrade immediately even if the 6 is where sony finally got it right.
This about sums it up. I got a 5N with EVF as an upgrade to the NEX 3 I had at first, so a 6 does not make sense - rather get one or two of these Contax lenses ( I have the 90 already and the 45 is tempting as is the 28, but they start to get expensive )