A:AnswerNeither. It's just roku. The biggest difference between the different roku players is the remote, but with the roku app you'll get all the benefits of the remotes. The smaller differences between the roku players is just things like sd card reader and usb ports which you can find on some tvs. So having the roku tv eliminates the need to get a roku player all together.
A:AnswerYes you can and depending on which harmony you have , the elite and any off the ones that have a wifi base with blaster it will scan for the in devices and automatically find the roku inside off it
A:AnswerI would assume that since someone from Sharp decided to post without giving an answer, that the answer is that it's edge-lit. If it were full array, I'm sure they'd want to let that be known. The only reason they would want to hide it is if it's using the lesser feature.