I installed my Orbi + satellite this week. My problem is that my cable modem is downstairs (our bedrooms are downstairs, living areas upstairs) and in a back bedroom, and the way the house is designed our sunroom is on the other side of the house, on another floor, and pretty far away. Quite a few walls in between. Our needs are pretty simple: two notebooks, two iphones, two iPads, two PS4s 3 Chromecast 2s, and I run a Plex server off my notebook that will be used all over the house (three TVs in a wide range of locations.) Dish satellite (Hopper 3 and two 4K Joesy.) Lots of use of the Plex server to watch ripped TV shows and movies, a lot of Netflix and Hulu, multiplayer on the two PS4s,
Also, our Internet service is only 100MBps (I say only - we just got a bump from 50 max to 100 in the last year) so we can't really test out anything faster than that.
Install of the Orbi was very simple. Unplugged and removed my current router, plugged the Orbi router in to the cable modem, it started up. Connected my laptop to it via ethernet and went to the setup screen. Very routine setup, with the only problem being that the online firmware update seemed to just sit forever, so I canceled that and downloaded the firmware updates and did it manually, which was trivially easy. Plugged in the satellite in a central location upstairs and got a "blue" signal fairly soon, indicating a good signal from the router, Cool.
After setting the SSID name and password, I set up my computers, phones, iPads, PS4s, Chromecast 2s, and it just worked. Speeds in every location in the house measured between 90 - 99 Mbps, so I guess I can't ask for more than that.
It's interesting that there aren't separate SSID names for the 2.4GHz and 5GHz connections. I can't look at the connected devices and see how they are all connected. I assume it just automatically connects via the fastest capability of each device? You certainly don't get all of the info and options you get on, say, a high end "normal" ASUS router.
At the end of the day, though - plugged them in, simple set up, and I now have what appears to be complete and full coverage in every spot in the house. Oh, and my wife likes the way the Orbis look - she says they look like large air fresheners. ;)