[noggin]

Thanks for the reply. If I was looking at a 24p Box, what would you recommend then for 4k?

I wouldn't at the moment - because of the lack of standards and content. However the Wetek Core is a decent box with 2160/24p output (and HEVC 8 bit 2160p decode), and is one of the few boxes with Netflix HD support (not UHD - and for some bizarre reason only stereo audio with Netflix).

The nVidia Shield does UHD and also supports Netflix UHD content, as I think does the 4K Amazon Fire TV 2.

If you're more in to tinkering at the bleading edge then something like an ODroid C2 (which has an S905 SoC which supports HEVC 10 bit and 2160/60p output) is fun to play with - but it is very early days and has lots of rough edges. The forthcoming new Wetek players should be interesting too.

Personally, at the moment, I'd buy a box that played the content I currently have - and for most of that, in my case, a Raspberry Pi 3 and a Chromebox deliver excellent results for me, and they are what I use for day-to-day 1080p and below viewing. All of my current viewing is really H264, VC-1 and MPEG2 1080p and below. I have a Wetek Core and an ODroid C2 which I play with - but the lack of consistent DVD playback support (they don't support interlaced DVD content) means they aren't currently in front-line action.