I have had both and I have found a number of pros and cons for both. It will come down to personal preference. The design from the front is the same on both. The design of the back is slightly different but nothing important. 

Hardware. The biggest differences are the screen - original has edge lit display while the NG has backlit. This is a personal preference but I prefer the NG here. With the original if you have a black screen with white text or anything bright in the center, you will notice light illuminating from the sides - resulting in uneven black. I used to find this quite distracting.  You don’t get this with the NG. I also find the picture processing on the NG to be superior to the original too. Not as many movement artifacts but still not perfect. Also, you don’t have as many full 4K inputs on the original. The start up procedure on the original is far smoother and relatively faster  - when you turn on, the speaker drops and then opens wide with the picture seamlessly. The NG isn’t as smooth - when you turn on, the speaker drops and then there is a big pause and finally the speaker opens wide with stuttering curtains.

Software - the original is certainly more classic B&O in design but it is quite limited and doesn’t feel like a modern 4K tv. I found the TV Guide on the original rarely worked and also no ability to install new apps and the apps that are available are terrible.  The NG obviously has android. Now I would prefer the original B&O look but I find the NG is far more connected and modern than the original. Android does allow you to download more apps to the tv, including 4K Netflix (when it works) and 4K YouTube and the ability to install 3rd party apps which I find really useful. I use Terrarium daily to stream tv shows and movies. The NG also has chrome cast built in allowing you to stream from phone, laptop etc. The NG was very buggy, like the 14 and Horizon on release but most have been ironed out now and it is just as stable as the original now.

So it does come down to personal preference. There certainly isn’t a clear winner but rather pros and cons on either side. It really depends what matters to you. 

Many thanks for all your comments so far. Do others agree with SolidSnake that on the Mark I you can see the light bleed on the screen during some scenes? I know this would bug me a lot if noticeable. Would also be interested to know how the Mark I handles motion as I am sure I remember thinking it wasn't great when I first viewed it on release several years ago, thanks...

BAND'OH! wrote:

Many thanks for all your comments so far. Do others agree with SolidSnake that on the Mark I you can see the light bleed on the screen during some scenes? I know this would bug me a lot if noticeable. Would also be interested to know how the Mark I handles motion as I am sure I remember thinking it wasn't great when I first viewed it on release several years ago, thanks...