I know this thread was about the OP troubles with his 103, and I'm glad he's got a path going forward to get it repaired. But I wanted to ask a question since we're on this topic. Can anyone here comment on how much better a 4k disc looks compared to Blu-ray disc? \n\nThe reason I ask, is because I am trying to decide if I should replace my 105 with one that plays 4k disc. I know a new Oppo is out of the question at this point, but there are some Sony models that look interesting. Problem is, I've never been a big movie buyer. I have about 25 movies in my collection, and I know it's difficult to find 4k disc for rent. Blu-ray still looks really good to me on my Sony 4k set. And I still enjoy using my Oppo 105, although I don't use it for streaming as much as I did when I bought it. Anybody have any thoughts on comparing blu-ray to 4k?