The thing that made this particular modem so interesting to me was the fact that it said it shouldn't require a phone call to Xfinity to get it setup. I am also a huge fan of Netgear. I have their fantastic Arlo security cameras around my property and they work flawlessly. So, a combination of future-proofing, Netgear branding, and easy setup were all things that were appealing to me.
To setup the modem, I simply unplugged my old modem and plugged ethernet, power, and the cable into the new modem. I then hit the power button to turn it on. I didn't bother unplugging or turning off the routers on my network. Next, I pulled up the Comcast/Xfinity activation page that they reference in their "Quick Setup" guide. A minute or two later, I put my account number and phone number into the website. It took me to a second page that establishes a connection (Note: Comcast has a box checked that will change your home page, so I unchecked it). It then had me continue to the next page where it reset my modem. I watched the LEDs on the front of the modem until all of them were solid and I went to another website and everything was done in less than 10 minutes. I didn't even need to reboot my modems or computers.
I should mention that I did a speed test to make sure my speeds weren't significantly worse, which would indicate that something was wrong, and they were slightly better than the speeds on my older modem. As I mentioned, I got this for future-proofing more than anything, so I expect that it will be ideal down the road as speeds inevitably increase.