Looked at all the major brands for "higher end" TV and settled on the Sony 900F partly because of other Sony models we have had and been completely satisfied with. Could not be happier with the item. From unpacking to set up was SMOOTH. Would highly recommend the 900F to a friend.
It is recommended to buy Sony products only. They function perfectly together and the set up Moderate and easy. The TV picture Quality is off the chain!
Both this to upgrade from my 40" Sony KDL-40V5100. I am as equally impressed with this as I was with the last Sony TV.
The x900f sound is better than the the Samsung sound bar I was using with the last TV. There is a sounds seeing for stand or wall mount, which is a nice idea. The speakers are down facing and my TV is wall mounted.
The picture is good, but takes a little tweaking of the settings to reduce the motion blur. Once set up, the picture is fantastic with quality source content. You won't do better unless you go to OLED, which is twice the price.
The Android TV functionality, I would say, is not optimized, but it still works just fine. There are "apps" button and "home" buttons on the remote. You sort of have to pick between the two menus to find what you want. A few TV settings are only available through the "home" menu and not in the TV settings. A bit puzzling, but not unworkable.