My TV doesn't have an indicator for 1080/p24. It's a Sony 40W600B. I like the Roku 3 which I use almost daily, mostly with Pandora. Both are equal with DNLA, but Sony does great with DVD and Blu-ray. Like you said, Sony seems to get in the way of some applications. I also think the setup UI sucks, but I don't use it much anyhow. The Roku has very good wireless. The Sony not so much. When it come to streaming video I only have Prime, but I use my TiVo for that since it has a great UI and 1080/p24. As an aside, I noticed that CNN uses DD EX 6.1.OK. I was just curious as I know both my TVs can display 1080/24, as they display it for blu-ray fine.
I'm still trying to decide which is the better streamer too, the Roku or the Sony, as far as available content, the Roku has the sony beat. For apps that both units share such as Netflix amazon, VUDU, etc. they seem to be about the same, only Roku's apps seem to be direct unlike son versions.