I will say, that my biggest complaint about the Sony Screens are the viewing angle and reflectivity of them. To be fair, I am less put off by the former which isn't great, and it works well from
most common viewing angles unless you have a very wide room and plan on passively watching from much wider angles.
Reflectivity is more my issue.
IIRC, RTINGS measures and rates both of those. My newer Sony, the 49" X900 is decent in both... not exemplary. If I have some light in my room and the screen is dark, I can definitely see myself and/or my room to some extent. This isn't a deal breaker... there are many other issues I would rate higher on the list, such as heat generation (I'm in a pretty small room, so a hotter TV would warm my space more than I would like... and I already have a good quality Marantz space heater in my system!
Last time I got into RTINGS stuff, they were offering limited reviews for free. I did not pursue what subscribing would cost, but I have found their work to be pretty accurate and thorough.