Other reviews have taken a very positive view of the Airport Extreme, including this one by a PC magazine, that gave it a top ranking and highly recommended it: http://www.pcadvisor.co.uk/test-centre/pc-peripheral/10-best-wireless-router-201 6-uk-wifi-3217482/
You really need to look at the details and decide what matters to you. Note that Consumer Reports often does not rank Apple computers at the top of its ratings either, yet I buy those over PC's. The Consumers Reports testing gave the Airport Extreme good or even excellent ratings in most categories, and gave it a low rating only in its "long distance" speed test, However other testers have found otherwise (see link above, also user reports on Amazon), sometimes these results are very dependent on the construction of walls and materials where the testing takes place. Consumer Reports also gave slightly lower ratings for the Airport Extreme due to its lack of parental controls and ability to customize Wi-Fi Multimedia (WMM) or Quality of Service (QoS), which means you can't prioritize different types of network traffic with those tools. Also, the Airport Extreme has 3 instead of the more common 4 ethernet wired ports and has a USB 2 port instead of USB 3. I use Consumer Reports a lot, you need to look at the basis for its ratings and decide what matters to you. I recently replaced a Linksys router (that had to be periodically reset to maintain its wireless throughput) with an Airport Extreme; the Linksys router had all those highly customizable capabilities through its web based browser utility, but to be honest, I never used any of them.
The only "con" of the Airport Extreme that gave me any pause was the USB 2 port (instead of USB 3). However, our printers and scanners are wireless so neither needs the USB port, and frankly, unless you are located quite close to the router, the speed of hard disk reads/writes attached to the router's USB will likely be dominated more by the wireless speeds versus USB speed. And I have never attached a drive to that USB port anyway. So for me, that did not matter.
Even the reviews by PC magazines and writers are impressed with the ease of setting up the Airport Extreme. When I got mine, I started setting it up via my iPhone just to see if that could even be done, and before I knew it, in less than 60 seconds, it was done! Also, the WPS method of connecting printers and scanners worked easily too, you literally click on something and it's done. I'm pretty impressed so far with the Airport Extreme -- the "beam forming" really works, you can measure this by doing several copy/speed tests in a row, the subsequent tests get faster and faster as the router senses the devices and optimizes its throughput for their locations. My Airport Extreme is on a lower floor but higher floors get about twice as fast data rates as I got with the Linksys n-router previously, and I can also see the wireless signal out in the yard (wasn't possible wth the older n-Linksys).