The 900e is not getting Dolby Vision, the some other sites are wrong and that statement has been confirmed by Sony. As for the weight, its correct and definitely has caught my attention. The X1 extreme processor can't weigh that much more. I would assume/hope that given the difference in price you are seeing better materials (less plastic) going into the 930e - it does cost more - vs. the 900e. Chris from Cleveland Plasma has said more than a few times that given the price difference between the Sony's that use FALD, somethings got to give on the performance with the 900e, numbers just don't add up. You could always visit VE, apparently they have a 900e setup and running.
There is no perfect display, quit looking for faults and enjoy
LG B7 OLED 65" (waiting for cal by DNice)
Ascend's with RAAL, Love my PSA v1800 and a 7.2.4 speaker config, Oppo 203 and other toys