This is not limited to Sony products. My LG BP620 Blu-ray player updated it's software a few weeks back. Since then I've not been able to see HD streams hit X-High. I figured there was a small update on Netflix's side to simply not show this option anymore. Before the update I don't remmeber seeing much of a difference between HD/X-High and HD/High streams. There was a notable difference when it dipped to HD/Medium. Still this is very strange.