I originally purchased my Eeros about 5 years ago when the original Eeros were released and before the company was acquired by Amazon. Over that time, I have added a lot more devices to my network as well as the available bandwidth in my home. Over that time, it was becoming increasingly clear my Eeros were not cutting it any more in terms the new standards they supported or the ability to keep up with my growing network. So, it was more a question of what I would replace them with. I looked at all the usual suspects, but ultimately decided to purchase Eeros again knowing it would not be a hassle to return them to Amazon if I was dissatisfied. I decided to go all the way and purchase the Eero Pro 6, although currently most of my home devices do not support WIFI 6. Based on the frequency of updates from Eero and knowing I would continue to add newer devices to my network, I felt comfortable with paying the extra $$$ for the Pro 6 model. I purchased the Eero Pro 6 3 pack. From the time I opened the box until I replaced the existing 3 original Eeros with the 3 new Eero Pro 6s was about 15 minutes. I replaced the gateway Eero first. That required launching the Eero app and indicating that I wanted to replace an existing Eero (it's there so keep looking if you don't see it). You will need to turnoff WIFI on your mobile device to complete the installation via cellular as you will lose your Internet connectivity for about 5 minutes or so. Power down the modem and the gateway Eero, disconnect the old Eero from the modem, connect the new Eero to the modem, and power them both back up. In about 5 minutes you should be back online. Do the same for the other 2 Eeros except you don't need to power down the modem again. My experience was painless and without issue. Once I was back on the air, I checked to see if all of my other configuration settings had been migrated to the new Eeros. All of my port forwards, IP reservations, etc. had been migrated over. All of my assigned device names had been preserved as well. In fact, everything was the same except I was running on new Eeros. Once I was back on the air, I needed to reconfigure my gateway to change my network mask. If you don't know what that is then you probably are good with the automatic configuration which is the default. In my case, the default network mask allowed for way more addresses than I would ever need. I changed it to 255.255.255.0 as it was unlikely I would ever need to support more than 255 devices in my home. I will not go into all of the details here, but it was pretty simple and once the Eeros rebooted, all was good. Now it was the moment of truth. I first tested the gateway Eero. I have 1 GB internet service and the gateway Eero showed my download speed as 950MB. So far, all was good. I next went to a room where my mobile device connected to the Eero in that room. When I reran the speed test I got around 450 MB when seated about 10 feet from the Eero. That was about 5x my previous speed with the original Eeros. My mobile device supports WIFI 6 and WPA3. For my non-WIFI 6 devices I still got roughly 2.5 - 3.0 x speed improvement. Generally, I am finding a stronger WIFI connection than previously between the Eeros and connected devices. While you get a visual indication of the strength of the WIFI signal, there is no way that I know of to get an actual measure of the WIFI signal. There are other apps you can use that will provide this information. If you are a gear head you might look at installing the Eero Labs beta features for band steering (encourages your capable devices to connect at 5 GHz), local DNS caching, and WPA3 support. I have been running them for several months without incident. There also are the Connected Home features that can be enabled, especially if you have Zigbee compatible smart devices and use Alexa. They don't improve performance, but may make it easier when adding new devices to your network. Otherwise, you can safely ignore them. Although it does not happen in all cases, in most cases my devices connect to the nearest Eero. Currently, there is no way I know of to force a device to connect to a specific Eero. However, sometimes powering down the device and powering it back up will result in it connecting to the closest Eero. However, if you have power outage, each device may connect to the Eero that is back on the air first once power is restored. Within the app, you can see which devices are connected to which Eero. Note that some Apple and Windows devices may show up twice as devices in your network. The complicated reason is these devices use something called MAC address randomization that may result in the device appearing to be a different device than the last time it was connected to the network. This is not an Eero problem and presently there is no easy workaround. You also can see whether your device is connected to the 2.4 or 5 GHz band, what type of security it is using (WPA2, WPA3, etc.), and some other useful information. You can add a user friendly nicknames for devices as well. If you chose to, you can specify the type of device (tablet, mobile, etc.). There are a bunch of other features that most owners may never use such as the ability to pause the Internet for specific users (e.g., kids), set schedules for Internet access, etc. Most owners, probably don't need to create port forwarding rules or reserve IP addresses, but the capability is there if you need it. You can disable DHCP if you are using another device to provide DHCP services. There is UPnP support which you probably should disable if you don't plan to use it or don't know what it is. Eero supports IPv6 as well. Eero provides a separate guest network that can be enabled or not depending on your needs. It can have its own separate SSID (name) and network key separate from your main home network. If you don't want guests accessing other devices (NAS, etc.) on your home network, but want to provide them WIFI, then you should have them use the guest network. Finally, you can access your Eero network remotely via the Eero app, so you can manage your network even when you are not home. There also is built-in Zigbee hub support, but I do not use it. I did not use customer support when I upgraded my Eeros, but based on past experience I found them to be helpful and generally knowledgeable. In one case, I was disconnected from the agent and she promptly called me back (from Bulgaria) to complete the call. I am a fairly knowledgeable about networking, but found them to be helpful and willing to work through an especially difficult problem until it was fully resolved. Because of the way Eero works, they can access your network remotely to help troubleshoot or reconfigure your Eero(s) which may be helpful for network newbies. This is my 2nd Eero purchase and I recommend the Eero Pro 6 if you are looking for a full featured option that is easy to use. It is a major improvement over the original Eero in terms of performance, but will be very familiar if you already own an Eero device. I have not compared it to the less expensive Eero options which may suit your needs if you don't need/want WIFI 6 capabilities. If you are a very advanced network user, Eero may frustrate you because a lot of the more technical features/capabilities are not accessible from the app in keeping with streamlining the app and ease of use goals.