That’s a non-trivial number of devices, so I would recommend a decent router that will last into the future, including service upgrades. Especially if anyone in the house is gaming and streaming movies at the same time

I recommend purchasing the modem and router as two separate units.

For the modem, because you have symmetric gigabit service, you’ll need one that supports gigabit upstream. That means the less expensive SB8200 is out. Instead, you’re looking at the ARRIS SURFboard S33. You can also find a comparable product from Netgear, the CM200

For your router, I personally like and trust Asus. Their user interface is robust but user-friendly, and their firmware is well supported by the home networking community (including a stellar ‘expanded’ version called AsusMerlin that frequently has features pulled into the official firmware)

While you could go with an older model that only supports WiFi 5 (AC), those models have reached end-of-life and will only receive critical security updates. Instead, it’s worth spending a bit more for the WiFi 6 (AX) version.

The minimum you’ll want to support a symmetric gigabit connection like what you have is the Asus RT-AX86U. However, to support possible higher speeds in the future, and to get the most rock-solid performance, I personally recommend the Asus RT-AX88U. This is what I personally own for my symmetric gigabit connection

NOTE: There are older versions with the same model number that have extra LAN Ethernet ports (8 total) and no 2.5Gbps port. Do NOT get them! There are known issues when using ports 5-8 on these units

Again, you could find a similar product in the Netgear Nighthawk brand.

Anything above that is going to be extra bells and whistles. Things like extra WiFi bands, stronger radios, more 2.5Gbps ports, support for link aggregation, and some one-click gaming features that I personally think aren’t worth the money.

Depending on the size of your home and your personal use case, you may also find value in adding mesh WiFi nodes to your network. Asus and Netgear both have their own implementations here. Asus’ version is called AiMesh and is pretty seamless. All of their modern routers can act as the primary mesh node.

Personally I do not game in WiFi, so I went with 3x Asus ZenWiFi AX Mini (XD4) mesh nodes. They can be connected wirelessly to the main router, or by Ethernet to reduce latency. If I were going to be gaming on WiFi, I would have gone with the beefier ZenWiFi AX (XT8) nodes instead

Hope that helps, and let me know if you have any questions! Happy to go into more detail on whatever you need