So the one thing that prevents you from buying what appears to be a great camera is that it offers you ISO 320, 400, 512, 640, etc, rather than 320, 640, 1280, etc? And that it offers you automatic ISO control?
That seems pretty crazy to me. Of all the features that might get in my way, being able to select ISOs on a scale with grain of less than 1 EV isn't one of them, and if I don't want to use AutoISO, I just don't use it. Why does it bother you so much? Do you never set an aperture between the marked 1-stop increments?
Just trying to figure out what I'm missing in your comment...
G