I think the 8x or any 2 handed touch panel horrible for video. Personally, I thnk your MX-850/ML600 is the best TV remote.
The 3x is close to the one way remotes. It has enough hard buttons that you only need the second hand for keyapd operaton. Since I'm a Guide and scroll type of guy the 3x works for me. It has been very responsive, it roams reasonably well, it has worked in a crowded Maimi RF enviorment.
I'd take a 3x any day over the 8x for TV. For AV/automation the 8x. But I like these panels wired and my wireless small, one handed devices. Good resoluton too, but you do need to think about your layout.
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