I've had a 4K OLED TV for just over a month and last week added a Oppo 203 UHD player. The quality of upscaled Blu-ray disks is exceptional on my 55". Yes I can see a difference between 1080p and 3840 but it's not night and day the way SD to HD was. You have to sit at the correct distance to appreciate the difference and I suspect many don't either through ignorance of the guidelines (no offence intended) or practical considerations in the home. Those who will genuinely benefit are those with projection systems as the image is so much larger. But they are a tiny minority of those who buy 4K gear. And then you have to consider the difference in price between a Blu-ray disk and a 4K one. Let's take Star Trek Into Darkness - a popular title. The Blu-ray version will cost you £4.98 for the standard release but the 4K one is £24.79. Heck, I can buy the trilogy in Blu-ray for £17.99 - nearly £7 cheaper than the single 4K release! Many other 4K titles cost £25 or even £30 compared to less than £10 for the Blu-ray equivalent. Any we also need to take into account that many of these films were not shot entirely in 4K. Some were shot partially with studio up-scaling for the remainder. So how can they charge 4K prices when the master was not 4K? For me the jury is out. If the prices of 4K came down to Blu-ray + 25% I would consider buying but as things stand I think these premium prices may signal its demise and it could become a great white elephant. Wouldn't be the first time it's happened would it?