Take it from someone who has a Sony HX909 (currently retired to the bedroom), which has FALD, as well as the XBR65-X900 (my primary display now). I am currently listening to a music SACD playing on my Oppo, and I have engaged the Oppo's "audio only" mode, which darkens the display. I am sitting in a dark room, with the only light coming from my bias lighting. The X900's screen is jet black, without a hint of cloudiness anywhere. It certainly compares with the HX909's screen uniformity.
I know many people will believe, how can the X900 possibly be as good as a panel with FALD? The only thing I can say is that you need to experience it to believe it. And you are not going to experience it in a showroom. The only way you will see this set perform at its best is if you have it in your home, and you pay very close attention to having it properly calibrated. Listen to the people who own this set--why would they be steering you wrong?
Sometimes the actual experience out performs the specifications. My untrained eyes tell me it's an excellent panel and yet my mind races off worrying about the printed limitations. Time to just shut my mind off and let my eyes lead the way. If it was only about what was better on paper than we wouldn't play the games on Sunday.