Simple for me, was the fact that I use a tech camera. I would greatly appreciate the live view of the 250, but more important, in about 65% of my shooting situations, I would benefit from a higher iso, 400 to 800 simple to allow for a faster shutter speed to stop blur of objects.
10MP to me is not that great a loss, to gain the "real" live view and iso 1600 that I can use. This is just one opinion, what I feel would work best for me.
400 to 800, to 1600 at full rez full instead of sensor plus I should have said.
400 on the 260 is a push at best at least on mine. I did feel that the loaner 260 I briefly had while my 260 went back for a 2nd repair did a better job in holding color in the shadows at iso 400. You can also see a bit of this in the shots of the merry go round that Doug took. You have to ask him for the raw files, but for sure the 260 that DT has at iso 400 seems to hold a good bit of color in the shadows. There is an increase in noise of course, however with Topaz denoise I have found that you can get a bit of the details back.
The loss I would have taken on the 260 was too much, considering mine at the time was 7 months old.
Paul